Description Summary:
An insecure deserialization vulnerability in the Splunk AI Toolkit allows authenticated users to execute arbitrary code by supplying malicious serialized data.

Executive Summary:
A high-severity insecure deserialization flaw in the Splunk AI Toolkit allows authenticated attackers to achieve arbitrary code execution on the host system.

Vulnerability Details

CVE-ID: CVE-2026-76395

Affected Software: Splunk AI Toolkit

Affected Versions: 5.7.0 up to, but not including, 6.0.0

Vulnerability: This vulnerability is an insecure deserialization issue, identified as CWE-502, where the application processes untrusted data without sufficient validation. It requires the attacker to be authenticated to the Splunk environment to deliver the malicious payload.

Business Impact

Successful exploitation allows for arbitrary code execution with the permissions of the Splunk service account. This level of compromise can lead to complete system takeover, theft of sensitive data, and persistent presence on the network, justifying the high CVSS score of 8.8.

Remediation Plan

Immediate Action: Upgrade the Splunk AI Toolkit to version 6.0.0 or the latest available patched version recommended by the vendor.

Proactive Monitoring: Monitor for suspicious child processes initiated by the Splunk service, such as shell commands or unexpected script executions, which may indicate exploitation attempts.

Compensating Controls: Isolate the server running the AI Toolkit from critical internal networks and apply strict egress filtering to prevent the server from reaching out to command and control infrastructure.

Exploitation Status

Public Exploit Available: unknown

Analyst Notes: As of August 20, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. Insecure deserialization is a highly dangerous class of vulnerability that often leads to full system compromise.

Analyst Recommendation

Due to the risk of remote code execution, this update should be treated with high urgency. Organizations using the Splunk AI Toolkit should verify their current version and schedule an immediate upgrade to version 6.0.0 to remediate the flaw.

Description Summary:
A Server-Side Request Forgery vulnerability in the Cisco Talos Intelligence for Enterprise Security Cloud app for Splunk allows unauthorized destination requests.

Executive Summary:
A Server-Side Request Forgery vulnerability in the Cisco Talos Intelligence for Enterprise Security Cloud app for Splunk allows attackers to force the server to interact with arbitrary external destinations.

Vulnerability Details

CVE-ID: CVE-2026-76389

Affected Software: Splunk Cisco Talos Intelligence for Enterprise Security Cloud

Affected Versions: 1.0 up to (excluding) 1.0.3

Vulnerability: The application fails to properly validate destination URLs when receiving requests from upstream components. This allows an authenticated attacker to perform Server-Side Request Forgery (SSRF), potentially accessing internal network resources or sensitive metadata.

Business Impact

With a CVSS score of 8.8, this vulnerability poses a high risk to organizational security. An attacker could leverage this flaw to bypass network perimeter controls, perform internal scanning, or interact with restricted services that are not exposed to the public internet, leading to data exfiltration or internal service disruption.

Remediation Plan

Immediate Action: Upgrade the Cisco Talos Intelligence for Enterprise Security Cloud app to version 1.0.3 or later.

Proactive Monitoring: Review Splunk access logs for anomalous requests originating from the plugin that target internal IP addresses or sensitive local services.

Compensating Controls: Ensure that the Splunk server has restrictive egress filtering rules applied at the network level to prevent unauthorized connections to internal resources.

Exploitation Status

Public Exploit Available: No confirmed public exploit available.

Analyst Notes: As of August 20, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The flaw is inherently dangerous due to the potential for internal network reconnaissance.

Analyst Recommendation

Organizations should treat this high-severity vulnerability with urgency. Applying the vendor-supplied update is the only definitive way to resolve the underlying request validation flaw and prevent potential lateral movement within the environment.

Description Summary:
An authorization bypass vulnerability in Splunk Enterprise allows authenticated users to perform unauthorized actions due to improper implementation of access control checks.

Executive Summary:
A critical authorization bypass flaw in Splunk Enterprise permits authenticated users to perform unauthorized operations, necessitating an immediate software update and configuration change.

Vulnerability Details

CVE-ID: CVE-2026-76352

Affected Software: Splunk Enterprise

Affected Versions: 10.4.0-10.4.1, 10.2.0-10.2.5, 10.0.0-10.0.8, 9.4.0-9.4.13

Vulnerability: This is an improper authorization vulnerability, categorized as CWE-285, where the software fails to enforce security constraints for specific actions. The vulnerability is accessible to authenticated users with low privileges.

Business Impact

The ability to bypass authorization checks can lead to unauthorized data access, modification of system configurations, or elevation of privileges. With a CVSS score of 8.8, this vulnerability represents a severe risk to data integrity and system security, as users may perform actions they are not permitted to execute.

Remediation Plan

Immediate Action: Upgrade to Splunk Enterprise versions 10.4.2, 10.2.6, 10.0.9, or 9.4.14, and manually set the configuration parameter scripted_lookup_raw_write_enforcement = block in limits.conf under the [lookup] section, followed by a service restart.

Proactive Monitoring: Audit user activity logs to detect unexpected modifications to lookups or unauthorized attempts to access restricted system functions.

Compensating Controls: Implement strict access control lists (ACLs) and review user permissions to ensure the principle of least privilege is strictly enforced while the patch is being applied.

Exploitation Status

Public Exploit Available: unknown

Analyst Notes: As of August 20, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The flaw is inherently dangerous because it undermines the fundamental access control logic of the application.

Analyst Recommendation

Administrators must complete both the software upgrade and the mandatory configuration change provided by the vendor. Failure to apply the configuration change may leave the system vulnerable even after the software update is installed.

Description Summary:
A Server Side Request Forgery (SSRF) vulnerability exists in Splunk Enterprise and Splunk Secure Gateway, allowing an authenticated user to perform unauthorized requests to internal resources.

Executive Summary:
A high-severity Server Side Request Forgery vulnerability in Splunk Enterprise and Splunk Secure Gateway allows authenticated attackers to potentially access internal network resources.

Vulnerability Details

CVE-ID: CVE-2026-76351

Affected Software: Splunk Enterprise and Splunk Secure Gateway

Affected Versions: Splunk Enterprise 10.4.0-10.4.1, 10.2.0-10.2.5, 10.0.0-10.0.8, 9.4.0-9.4.13; Splunk Secure Gateway 3.10.0-3.10.8, 3.9.0-3.9.22, 3.8.0-3.8.69

Vulnerability: This vulnerability is a Server Side Request Forgery (SSRF) flaw, classified under CWE-918, where the application fails to adequately validate the destination of outbound requests. The vulnerability requires the attacker to have low-level authentication to the system.

Business Impact

Successful exploitation allows an attacker to bypass network segmentation and interact with internal services that are not exposed to the public internet. Given the CVSS score of 8.8, this poses a significant risk of data exfiltration or internal reconnaissance, potentially facilitating further lateral movement within the corporate network.

Remediation Plan

Immediate Action: Upgrade Splunk Enterprise to versions 10.4.2, 10.2.6, 10.0.9, 9.4.14, or higher, and ensure Splunk Secure Gateway is updated to the corresponding patched versions provided in the vendor advisory.

Proactive Monitoring: Review web server and access logs for unusual outbound connection patterns or requests directed at internal IP addresses or sensitive local services.

Compensating Controls: Deploy a Web Application Firewall (WAF) or egress filtering rules to restrict the server from initiating connections to unauthorized internal network segments.

Exploitation Status

Public Exploit Available: unknown

Analyst Notes: As of August 20, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The flaw's inherent exploitability is high due to the potential for attackers to leverage the server as a proxy to attack internal infrastructure.

Analyst Recommendation

Organizations should prioritize patching affected Splunk instances immediately. Given the potential for internal network exposure, verify that all Splunk components are included in the update cycle to eliminate the risk of exploitation by authenticated malicious actors.

Description Summary:
Splunk Enterprise suffers from improper privilege management, allowing authenticated users to obtain unauthorized control over system resources.

Executive Summary:
An improper privilege management vulnerability in Splunk Enterprise allows authenticated attackers to escalate their influence, potentially leading to unauthorized administrative control.

Vulnerability Details

CVE-ID: CVE-2026-76350

Affected Software: Splunk Enterprise

Affected Versions: 10.4 up to (excluding) 10.4.2, 10.2 up to (excluding) 10.2.6, 10.0 up to (excluding) 10.0.9, 9.4 up to (excluding) 9.4.14

Vulnerability: This is a privilege management flaw (CWE-269) where the system fails to correctly validate or track actor privileges. The vulnerability is exploitable by an authenticated user with low privileges.

Business Impact

Successful exploitation allows an attacker to gain elevated privileges beyond their intended scope, which can result in unauthorized administrative actions, data theft, or system configuration changes. Given the CVSS score of 8.8, this vulnerability presents a significant risk to the overall security and governance of the Splunk environment.

Remediation Plan

Immediate Action: Upgrade Splunk Enterprise to versions 10.4.2, 10.2.6, 10.0.9, or 9.4.14, or higher.

Proactive Monitoring: Review access control lists and user role assignments for any signs of unauthorized privilege escalation or unexpected administrative activity.

Compensating Controls: Implement strict role-based access controls and continuously audit user permissions to identify and minimize the impact of potential privilege management flaws.

Exploitation Status

Public Exploit Available: No

Analyst Notes: As of August 20, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. Privilege management flaws of this nature are frequently leveraged to maintain persistence within a compromised environment.

Analyst Recommendation

The severity of this vulnerability necessitates a swift update to the latest patched versions. Security teams should prioritize this remediation to prevent authenticated attackers from escalating privileges and gaining unauthorized administrative control over the platform.

Description Summary:
Splunk Enterprise is susceptible to code injection due to improper neutralization of externally influenced input, allowing authenticated users to modify intended code execution.

Executive Summary:
A critical code injection vulnerability in Splunk Enterprise enables authenticated attackers to influence code execution, threatening the integrity of the entire platform.

Vulnerability Details

CVE-ID: CVE-2026-76335

Affected Software: Splunk Enterprise

Affected Versions: 10.4 up to (excluding) 10.4.2, 10.2 up to (excluding) 10.2.6, 10.0 up to (excluding) 10.0.9, 9.4 up to (excluding) 9.4.14

Vulnerability: This is a code injection vulnerability (CWE-94) where the software constructs code segments using unvalidated input. The vulnerability is accessible to authenticated users with low privileges.

Business Impact

The ability to inject arbitrary code into the application environment carries severe implications, including full system compromise, remote code execution, and total loss of data confidentiality. The CVSS score of 8.8 underscores the high level of danger this vulnerability poses to organizational security posture.

Remediation Plan

Immediate Action: Upgrade Splunk Enterprise to versions 10.4.2, 10.2.6, 10.0.9, or 9.4.14, or higher.

Proactive Monitoring: Monitor system logs for unexpected process execution or abnormal behavior originating from the Splunk service account.

Compensating Controls: Ensure the principle of least privilege is applied to all service accounts and utilize host-based intrusion detection systems to monitor for unauthorized modifications to configuration or script files.

Exploitation Status

Public Exploit Available: No

Analyst Notes: As of August 20, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The nature of code injection vulnerabilities often makes them highly attractive targets for lateral movement.

Analyst Recommendation

Due to the potential for complete system compromise, this issue must be addressed with high urgency. Organizations are strongly advised to schedule maintenance windows to update their Splunk Enterprise deployments to the recommended fixed versions immediately.

Description Summary:
Splunk Enterprise contains an authorization bypass vulnerability that allows authenticated users to perform unauthorized actions or access restricted resources.

Executive Summary:
An authorization bypass vulnerability in Splunk Enterprise allows authenticated attackers to perform unauthorized operations, posing a high risk to data integrity and system security.

Vulnerability Details

CVE-ID: CVE-2026-76319

Affected Software: Splunk Enterprise

Affected Versions: 10.4 up to (excluding) 10.4.2, 10.2 up to (excluding) 10.2.6, 10.0 up to (excluding) 10.0.9, 9.4 up to (excluding) 9.4.14

Vulnerability: This is an improper authorization vulnerability (CWE-862) occurring because the software fails to perform adequate capability checks when a user attempts to access a resource. The attack requires low privileges (authenticated).

Business Impact

Successful exploitation permits an authenticated attacker to bypass intended access controls, potentially leading to unauthorized data exfiltration or modification. Given the CVSS score of 8.8, this flaw represents a significant risk to the confidentiality, integrity, and availability of sensitive logs and business intelligence stored within the Splunk platform.

Remediation Plan

Immediate Action: Upgrade Splunk Enterprise to versions 10.4.2, 10.2.6, 10.0.9, or 9.4.14, or higher.

Proactive Monitoring: Review audit logs for unusual access patterns or attempts by standard users to access administrative endpoints or unauthorized data indexes.

Compensating Controls: Utilize a Web Application Firewall or internal access control lists to restrict access to sensitive Splunk management interfaces until the update is applied.

Exploitation Status

Public Exploit Available: No

Analyst Notes: As of August 20, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The flaw's requirement for existing low-level authentication slightly limits the attack surface but remains a critical concern for internal security.

Analyst Recommendation

The severity of this vulnerability necessitates immediate attention from IT and security teams. Administrators should prioritize the deployment of the provided vendor patches to ensure that authorization logic is correctly enforced and to prevent potential privilege escalation or data exposure.

Description Summary:
Splunk Enterprise is vulnerable to path traversal due to improper neutralization of directory sequences, potentially allowing authenticated users to access files outside of restricted directories.

Executive Summary:
A critical path traversal vulnerability in Splunk Enterprise allows authenticated attackers to access sensitive system files outside of intended directories.

Vulnerability Details

CVE-ID: CVE-2026-76317

Affected Software: Splunk Enterprise

Affected Versions: 10.4 up to 10.4.2, 10.2 up to 10.2.6, 10.0 up to 10.0.9, 9.4 up to 9.4.14

Vulnerability: This is a path traversal vulnerability (CWE-26) involving the improper handling of pathname construction. The flaw allows an authenticated user (PR:L) to traverse the directory structure and access unauthorized files on the host system.

Business Impact

By accessing files outside of the intended scope, an attacker may read configuration files, credentials, or sensitive system data stored on the server. This compromise can facilitate further escalation of privileges or result in the exposure of proprietary information. The CVSS score of 8.8 underscores the high risk to confidentiality and system integrity.

Remediation Plan

Immediate Action: Upgrade Splunk Enterprise to versions 10.4.2, 10.2.6, 10.0.9, 9.4.14, or higher to resolve the directory traversal flaw.

Proactive Monitoring: Review file access logs for attempts to access paths containing directory traversal sequences, such as double dots or forward slashes.

Compensating Controls: Implement file system permissions that restrict the service account running Splunk to only the necessary directories and files.

Exploitation Status

Public Exploit Available: Unknown

Analyst Notes: As of August 20, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. Path traversal flaws are inherently dangerous in enterprise environments as they often provide the initial foothold for more advanced attacks.

Analyst Recommendation

Securing the file system is a critical component of maintaining a hardened Splunk environment. Administrators must patch affected systems immediately to prevent unauthorized file access and potential system compromise.

Description Summary:
Splunk Enterprise contains a flaw in query generation that fails to neutralize special elements, potentially allowing unauthorized data access or manipulation via an injection attack.

Executive Summary:
A high-severity injection vulnerability in Splunk Enterprise permits unauthorized data manipulation through the generation of malformed database queries.

Vulnerability Details

CVE-ID: CVE-2026-76316

Affected Software: Splunk Enterprise

Affected Versions: 10.4 up to 10.4.1, 10.2 up to 10.2.5, 10.0 up to 10.0.9, 9.4 up to 9.4.14

Vulnerability: This is a query injection vulnerability (CWE-943) that occurs when the application constructs data store queries using untrusted input. The attacker does not require authentication (PR:N) but requires user interaction (UI:R) to trigger the malicious query.

Business Impact

Successful exploitation allows an attacker to manipulate or exfiltrate sensitive data stored within the Splunk Enterprise database. This could lead to a breach of internal audit logs or sensitive configuration data, resulting in severe reputational damage and regulatory non-compliance. The CVSS score of 8.8 highlights the high risk to data integrity.

Remediation Plan

Immediate Action: Upgrade Splunk Enterprise to versions 10.4.2, 10.2.6, 10.0.9, 9.4.14, or higher.

Proactive Monitoring: Audit database query logs for patterns indicative of injection attempts, such as unexpected syntax or unauthorized access requests.

Compensating Controls: Deploy a Web Application Firewall to filter malicious inputs and neutralize common injection payloads before they reach the application layer.

Exploitation Status

Public Exploit Available: Unknown

Analyst Notes: As of August 20, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The reliance on user interaction slightly reduces the immediate risk compared to unauthenticated remote execution.

Analyst Recommendation

This vulnerability could be leveraged to bypass security controls or access private data stores. Security teams are urged to apply the recommended updates immediately to eliminate the risk of malicious query injection.

Description Summary:
Splunk Enterprise is susceptible to improper neutralization of special elements during code construction, which may allow authenticated users to execute arbitrary code.

Executive Summary:
An authenticated code injection vulnerability in Splunk Enterprise allows attackers with low privileges to achieve remote code execution.

Vulnerability Details

CVE-ID: CVE-2026-76315

Affected Software: Splunk Enterprise

Affected Versions: 10.4 up to 10.4.2, 10.2 up to 10.2.6, 10.0 up to 10.0.9, 9.4 up to 9.4.14

Vulnerability: This is a code injection vulnerability (CWE-94) where the application improperly handles user input during code construction. The vulnerability requires the attacker to have low-level privileges (PR:L) to successfully execute arbitrary commands on the underlying system.

Business Impact

The ability to execute arbitrary code provides an attacker with full control over the Splunk Enterprise instance. This poses a significant risk of data exfiltration, lateral movement within the network, and complete compromise of internal security monitoring operations. The CVSS score of 8.8 reflects the high impact on confidentiality, integrity, and availability.

Remediation Plan

Immediate Action: Upgrade Splunk Enterprise to versions 10.4.2, 10.2.6, 10.0.9, 9.4.14, or higher to apply the security patch.

Proactive Monitoring: Monitor system logs for unusual process execution or attempts to access restricted directories by low-privileged user accounts.

Compensating Controls: Ensure strict access control lists are in place to limit user permissions, and employ network segmentation to isolate the Splunk instance from critical internal assets.

Exploitation Status

Public Exploit Available: Unknown

Analyst Notes: As of August 20, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The vulnerability is highly exploitable once an attacker has gained a low-privileged user session.

Analyst Recommendation

Given the potential for remote code execution, this vulnerability represents a severe threat to the integrity of security operations. Administrators must prioritize the application of the vendor-supplied patches to all affected Splunk Enterprise instances to prevent unauthorized system access.

Description Summary:
Splunk Enterprise contains a code injection vulnerability where improper input neutralization allows attackers to execute arbitrary code.

Executive Summary:
A high-severity code injection vulnerability in Splunk Enterprise allows authenticated attackers to execute arbitrary code by manipulating system inputs.

Vulnerability Details

CVE-ID: CVE-2026-76314

Affected Software: Splunk Enterprise

Affected Versions: 10.4 up to 10.4.2, 10.2 up to 10.2.6, 10.0 up to 10.0.9, 9.4 up to 9.4.14

Vulnerability: This is a code injection vulnerability (CWE-94) where the application fails to properly neutralize user-influenced input before using it in a code segment. This vulnerability allows an authenticated remote attacker to alter the behavior of the software.

Business Impact

The ability to inject and execute arbitrary code carries the highest risk of system compromise. A CVSS score of 8.8 highlights the potential for full system control, which could result in data theft, persistent malware installation, or total platform failure.

Remediation Plan

Immediate Action: Upgrade Splunk Enterprise to versions 10.4.2, 10.2.6, 10.0.9, 9.4.14, or higher immediately.

Proactive Monitoring: Monitor system logs for suspicious process execution, unexpected child processes spawned by the Splunk service, or attempts to execute system-level commands via the web interface.

Compensating Controls: Employ a Web Application Firewall (WAF) with updated rulesets to inspect incoming requests for signs of code injection or command execution payloads.

Exploitation Status

Public Exploit Available: No

Analyst Notes: As of August 20, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. Code injection flaws are inherently dangerous, and this should be considered a critical vulnerability regardless of the current lack of public exploit code.

Analyst Recommendation

Immediate patching is required to neutralize this code injection risk. Organizations should prioritize updating their Splunk Enterprise instances to the latest versions to prevent potential remote code execution by authenticated attackers.

Description Summary:
Splunk Enterprise contains an access control vulnerability that allows authenticated attackers to bypass intended restrictions on system resources.

Executive Summary:
A high-severity access control vulnerability in Splunk Enterprise allows authenticated attackers to bypass security restrictions and interact with unauthorized resources.

Vulnerability Details

CVE-ID: CVE-2026-76313

Affected Software: Splunk Enterprise

Affected Versions: 10.4 up to 10.4.2, 10.2 up to 10.2.6, 10.0 up to 10.0.9, 9.4 up to 9.4.14

Vulnerability: This is an improper access control vulnerability (CWE-284) that allows an authenticated actor to interact with resources they should not be permitted to access. The vulnerability is remotely exploitable with low complexity.

Business Impact

Successful exploitation can lead to unauthorized access to sensitive data or configuration settings within the Splunk platform. With a CVSS score of 8.8, this vulnerability represents a severe risk to organizational security, potentially allowing an attacker to exfiltrate information or disrupt monitoring capabilities.

Remediation Plan

Immediate Action: Upgrade Splunk Enterprise to versions 10.4.2, 10.2.6, 10.0.9, 9.4.14, or higher.

Proactive Monitoring: Monitor for unauthorized access attempts to restricted configuration files or sensitive indexes that should not be visible to standard users.

Compensating Controls: Implement strict Network Access Control (NAC) and restrict access to the Splunk management interface to known, trusted subnets.

Exploitation Status

Public Exploit Available: No

Analyst Notes: As of August 20, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The vulnerability relies on an authenticated session, underscoring the importance of strong credential management and session monitoring.

Analyst Recommendation

Administrators must prioritize the application of the provided security updates to address this access control weakness. Failure to remediate this issue could allow authenticated malicious actors to bypass established security boundaries, leading to unauthorized data exposure.

Description Summary:
A privilege management vulnerability in Splunk Enterprise for Windows allows authenticated local users to gain unintended control over system resources.

Executive Summary:
A high-severity privilege escalation vulnerability in Splunk Enterprise for Windows could allow local attackers to gain unauthorized administrative control over the system.

Vulnerability Details

CVE-ID: CVE-2026-76259

Affected Software: Splunk Enterprise

Affected Versions: 10.4 up to 10.4.2, 10.2 up to 10.2.6, 10.0 up to 10.0.9, 9.4 up to 9.4.13, 9.3 up to 9.3.14

Vulnerability: This is a privilege management flaw (CWE-269) where the software fails to properly check or assign privileges. The vulnerability requires the attacker to have low-level local access to the system to exploit the unintended sphere of control.

Business Impact

Successful exploitation of this vulnerability allows an attacker to escalate privileges, potentially leading to full system compromise. Given the CVSS score of 8.8, this poses a significant risk to data confidentiality, integrity, and availability within the Windows host environment.

Remediation Plan

Immediate Action: Upgrade Splunk Enterprise to versions 10.4.2, 10.2.6, 10.0.9, or 9.4.14, or higher as specified by the vendor.

Proactive Monitoring: Review Windows system event logs for unusual account usage or unexpected process execution with elevated privileges.

Compensating Controls: Implement strict local access controls and ensure that only authorized personnel have physical or remote interactive login access to the Splunk server.

Exploitation Status

Public Exploit Available: Unknown

Analyst Notes: As of August 20, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The flaw's inherent exploitability is limited by the requirement for local access.

Analyst Recommendation

This vulnerability represents a significant risk to the integrity of the host operating system. Administrators should prioritize the deployment of the vendor-provided patches during the next maintenance window to prevent potential privilege escalation.

Description Summary:
Splunk Enterprise contains an improper privilege management vulnerability that allows authenticated users to gain unintended control over system resources.

Executive Summary:
A high-severity improper privilege management flaw in Splunk Enterprise allows authenticated attackers to potentially gain unauthorized control over system resources.

Vulnerability Details

CVE-ID: CVE-2026-76253

Affected Software: Splunk Enterprise

Affected Versions: 10.4 up to 10.4.2, 10.2 up to 10.2.6, 10.0 up to 10.0.9, 9.4 up to 9.4.14

Vulnerability: This is an improper privilege management vulnerability (CWE-269) where the software fails to correctly check or track actor privileges. The CVSS vector indicates that a low-privileged authenticated attacker can exploit this remotely with low attack complexity.

Business Impact

The ability to bypass privilege controls poses a significant risk to the confidentiality, integrity, and availability of the Splunk environment. Given the CVSS score of 8.8, this vulnerability could allow an attacker to escalate privileges, access sensitive indexed data, or manipulate configurations, leading to a complete compromise of the security monitoring platform.

Remediation Plan

Immediate Action: Upgrade Splunk Enterprise to versions 10.4.2, 10.2.6, 10.0.9, 9.4.14, or higher as recommended by the vendor.

Proactive Monitoring: Review internal access logs for unusual privilege escalation patterns or unexpected administrative actions performed by non-administrative user accounts.

Compensating Controls: Ensure the principle of least privilege is strictly enforced for all service accounts and user roles within the Splunk environment.

Exploitation Status

Public Exploit Available: No

Analyst Notes: As of August 20, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The flaw's requirement for existing authentication slightly limits the attack surface, but it remains a high priority for organizations relying on Splunk for security operations.

Analyst Recommendation

Due to the high CVSS score and the critical nature of the affected software, administrators should treat this update as a high priority. Patching the affected instances immediately is the only effective way to prevent potential privilege escalation and unauthorized system control.

Description Summary:
Splunk Enterprise is susceptible to a Cross-Site Request Forgery (CSRF) vulnerability that allows attackers to perform unauthorized actions on behalf of authenticated users.

Executive Summary:
A high-severity Cross-Site Request Forgery vulnerability in Splunk Enterprise allows attackers to execute unauthorized commands, threatening the integrity and confidentiality of the platform.

Vulnerability Details

CVE-ID: CVE-2026-20296

Affected Software: Splunk Enterprise and Splunk Cloud Platform

Affected Versions: See metadata for full list of specific affected ranges.

Vulnerability: The web application fails to sufficiently verify the intent of user requests, leading to a CSRF vulnerability (CWE-352). This allows an attacker to trick an authenticated user into performing actions without their consent.

Business Impact

Successful exploitation could allow an attacker to modify system configurations, access sensitive data, or perform administrative actions. With a CVSS score of 8.3, this represents a major security risk that could lead to full compromise of the Splunk environment.

Remediation Plan

Immediate Action: Update Splunk Enterprise and Splunk Cloud Platform to the versions specified in the vendor advisory (SVD-2026-0702).

Proactive Monitoring: Review audit logs for unexpected configuration changes or administrative actions initiated by standard user accounts.

Compensating Controls: Ensure users are logged out of administrative sessions when not in use and implement strict browser-based security policies to mitigate CSRF risks.

Exploitation Status

Public Exploit Available: No (exploit_available: false)

Analyst Notes: As of July 17, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The vulnerability is highly exploitable if a user with an active administrative session visits a malicious site.

Analyst Recommendation

Given the potential for complete system impact, administrators must prioritize the update to the latest versions of Splunk. Failure to patch leaves the environment vulnerable to unauthorized administrative manipulation.

Description Summary:
Splunk Enterprise and Cloud Platform contain an authentication bypass vulnerability in a PostgreSQL sidecar service, allowing unauthenticated users to create or truncate arbitrary files.

Executive Summary:
An unauthenticated file operation vulnerability in Splunk Enterprise and Cloud Platform could allow attackers to manipulate sensitive files via a vulnerable sidecar service.

Vulnerability Details

CVE-ID: CVE-2026-20253

Affected Software: Splunk Enterprise and Splunk Cloud Platform

Affected Versions: Splunk Enterprise < 10.2.4 and 10.0.7; Splunk Cloud Platform < 10.4.2604.3 and 10.2.2510.14

Vulnerability: The vulnerability is classified as CWE-306 (Missing Authentication for Critical Function). It allows any network-reachable, unauthenticated attacker to invoke file creation or truncation operations through a PostgreSQL sidecar service endpoint.

Business Impact

With a CVSS score of 9.8, this vulnerability poses a severe risk to system integrity and data availability. Attackers could potentially disrupt services by truncating configuration files or gain further access by creating malicious files, leading to significant system downtime or unauthorized data modification.

Remediation Plan

Immediate Action: Update Splunk Enterprise to version 10.4.0, 10.2.4, 10.0.7, or higher, and verify that Splunk Cloud instances are updated to the latest available versions provided by the vendor.

Proactive Monitoring: Review access logs for unusual requests directed at PostgreSQL sidecar service endpoints and monitor for unexpected changes to critical system files.

Compensating Controls: Use network segmentation or a Web Application Firewall (WAF) to restrict access to the vulnerable sidecar service endpoint to authorized internal management IPs only.

Exploitation Status

Public Exploit Available: False

Analyst Notes: As of June 10, 2026, there is no public information indicating active exploitation of this vulnerability. However, the lack of authentication on a critical file-handling function makes this a high-priority target for attackers.

Analyst Recommendation

Due to the critical nature of this vulnerability and the potential for unauthorized file manipulation, immediate patching is required. Organizations should ensure they are running the recommended versions provided in the vendor advisory to mitigate the risk of unauthenticated remote exploitation.

Description Summary:
A remote code execution vulnerability in Splunk products arises from unsafe deserialization of data, allowing low-privileged users to execute arbitrary code.

Executive Summary:
A critical remote code execution vulnerability in Splunk Enterprise and related products allows low-privileged users to execute arbitrary code via malicious JSON input.

Vulnerability Details

CVE-ID: CVE-2026-20251

Affected Software: Splunk Enterprise, Splunk Cloud Platform, Splunk Secure Gateway

Affected Versions: Splunk Enterprise < 10.2.4, 10.0.7, 9.4.12, 9.3.13; Splunk Cloud Platform < 10.3.2512.12, 10.2.2510.14, 10.1.2507.22, 9.3.2411.132; Splunk Secure Gateway < 3.10.6, 3.9.20, 3.8.67

Vulnerability: The vulnerability is caused by the unsafe deserialization of App Key Value Store data using the 'jsonpickle' Python library. A low-privileged user can leverage this via the Splunk Secure Gateway app to execute arbitrary code.

Business Impact

With a CVSS score of 8.8, this flaw represents a significant risk, enabling remote code execution from a low-privileged context. This could allow an attacker to escalate privileges, access sensitive logs and data, or pivot deeper into the corporate network, directly impacting the confidentiality and integrity of the Splunk installation.

Remediation Plan

Immediate Action: Apply the specific patches provided by Splunk for the affected versions of Splunk Enterprise, Cloud, and Secure Gateway immediately.

Proactive Monitoring: Monitor for suspicious activity involving the jsonpickle library or unusual API calls to the Splunk Secure Gateway app.

Compensating Controls: Restrict access to the Splunk Secure Gateway application and limit the permissions of low-privileged accounts to prevent them from interacting with sensitive app configurations.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of June 11, 2026, there is no public information indicating active exploitation of this vulnerability. However, due to the nature of the flaw, the potential for exploitation is high.

Analyst Recommendation

The ability for a low-privileged user to achieve remote code execution makes this a high-priority vulnerability. Organizations must audit their Splunk environments and apply the vendor-recommended updates across all affected components without delay.