CVE-2026-20253
Splunk Enterprise and Cloud Platform contain an authentication bypass vulnerability in a PostgreSQL sidecar service, allowing unauthenticated users to create or truncate arbitrary files.
Critical vulnerabilities, curated daily for security professionals
See how vulnerabilities affect your specific environment
CRS uses the System Security Context Vector (SSCV) Framework v1.0 to adjust CVSS scores based on your system's exposure level, network position, and business criticality. Learn more about SSCV Framework
Wednesday's disclosures center on a cluster of remotely exploitable flaws in AI and ML development tooling, including Crawl4AI, Flowise, Langflow, and picklescan, alongside a high-severity issue in Red Hat Ansible Automation Platform 2.5. Critical CVEs rose to 30 (up 76% from 17), while high-priority CVEs fell to 57 (down 30% from 81). Among the most severe are CVE-2026-56274 (CVSS 9.9) in Flowise, CVE-2026-53753 (CVSS 9.8) in Crawl4AI, and CVE-2026-12417 (CVSS 9.8) in Pravel SignUp/SignIn, with remote code execution and unsafe deserialization recurring across the set. Active exploitation is confirmed in five CVEs spanning Splunk Enterprise, Lantronix EDS5000, and Ubiquiti UniFi OS. No patches were available at disclosure time, so teams should prioritize compensating controls and exposure reduction for affected components until vendor fixes ship.
Immediate action: Prioritize the actively exploited systems first—Splunk Enterprise and Cloud, Lantronix EDS5000, and Ubiquiti UniFi OS—by restricting management access and applying vendor guidance. For the AI/ML tooling and infrastructure flaws (Flowise, Crawl4AI, Langflow, picklescan, Ansible Automation Platform), no patches are available yet, so isolate affected services, limit untrusted input, and monitor for vendor releases.
Splunk Enterprise and Cloud Platform contain an authentication bypass vulnerability in a PostgreSQL sidecar service, allowing unauthenticated users to create or truncate arbitrary files.
The Lantronix EDS5000 contains a code injection vulnerability that is currently being actively exploited in the wild.
An improper input validation flaw in Ubiquiti UniFi OS enables network-adjacent attackers to execute arbitrary commands on the underlying system.
A path traversal vulnerability in Ubiquiti UniFi OS allows network-adjacent attackers to read sensitive system files and potentially compromise user accounts.
An improper access control vulnerability in Ubiquiti UniFi OS devices allows network-adjacent attackers to modify system configurations without authorization.
The Pravel SignUp & SignIn WordPress plugin contains an authentication bypass vulnerability allowing unauthenticated attackers to reset any user password and achieve full account takeover.
Crawl4AI contains a sandbox escape vulnerability in its computed fields feature, allowing unauthenticated attackers to achieve arbitrary code execution via crafted extraction schemas.
Immich is vulnerable to reflected Cross-Site Scripting (XSS) on the login page, allowing attackers to hijack authenticated user sessions and create persistent administrative API keys.
Electron versions 42.3.1 through 42.3.3 are vulnerable to heap buffer underflow and overflow due to incorrect byte length calculations in the Node.js Buffer API.
Flowise versions before 3.1.2 are susceptible to OS command injection via the Custom MCP Server feature due to inadequate validation of command flags and file access restrictions.
The picklescan library before 1.0.4 fails to block multiple Python standard library modules, allowing attackers to execute arbitrary code via malicious pickle files.
The Invoice Generator WordPress plugin contains an account takeover vulnerability via an insecure password reset function that allows unauthenticated attackers to hijack any user account.
A missing authorization vulnerability in the Event-Driven Ansible (EDA) websocket API allows authenticated users to access plaintext credentials, including SSH keys and tokens.
Langflow contains a critical remote code execution (RCE) vulnerability in its "Shareable Playground" feature, allowing unauthenticated users to execute arbitrary Python code.
Multiple OS command injection vulnerabilities in the GeoVision GV-I/O Box 4E allow remote attackers to execute arbitrary commands via crafted network packets.
An unauthenticated OS command injection vulnerability in the libNetSetObj.so library of GeoVision GV-I/O Box 4E allows remote code execution via a crafted network packet.
An unauthenticated OS command injection vulnerability in the libNetSetObj.so library of GeoVision GV-I/O Box 4E allows remote code execution via a crafted network packet.
An unauthenticated OS command injection vulnerability in the libNetSetObj.so library of GeoVision GV-I/O Box 4E allows remote code execution via a crafted network packet.
The GeoVision GV-I/O Box 4E contains a stack-based buffer overflow vulnerability in the DVRSearch service, allowing remote code execution via crafted UDP packets.
Poweradmin fails to validate the HTTP_HOST header, allowing unauthenticated attackers to poison redirect URIs and hijack user authentication tokens, leading to full account takeover.
The Totolink EX1200L router contains a buffer overflow in the login functionality, allowing unauthenticated remote attackers to execute arbitrary code as root.
A stack-based buffer overflow vulnerability in the GeoVision GV-I/O Box 4E DVRSearch service allows unauthenticated remote attackers to execute arbitrary code via crafted UDP packets.
An Insecure Direct Object Reference (IDOR) vulnerability in the Langflow /api/v1/responses endpoint allows authenticated attackers to execute unauthorized AI flows belonging to other users.
A path traversal vulnerability in Langflow components based on BaseFileComponent allows attackers to read arbitrary files from the server's filesystem via manipulated RAG input files.
LobeHub prior to 2.1.57 contains an unauthenticated Server-Side Request Forgery (SSRF) vulnerability in the /webapi/proxy endpoint, allowing arbitrary outbound requests and cookie injection.
FOSSBilling versions prior to 0.8.0 are susceptible to Server-Side Template Injection (SSTI) in the Twig rendering engine, enabling remote code execution for authenticated administrators.
The GeoVision GV-I/O Box 4E contains a stack-based buffer overflow in the DVRSearch service, allowing unauthenticated attackers to trigger remote code execution via malformed UDP packets.
A stack-based buffer overflow in the DVRSearch service allows unauthenticated remote attackers to execute arbitrary code via crafted UDP packets.
An authorization bypass in the FOSSBilling API allows unauthenticated attackers to invoke administrative system functions by accessing restricted endpoints.
A prototype pollution vulnerability in n8n, exploitable via an unvalidated pagination parameter, can lead to remote code execution for authenticated users.
An authenticated user can inject CLI flags via the Git node's Push operation in n8n, enabling arbitrary file read access on the host server.
An authenticated workflow bypass vulnerability in the n8n XML node allows for Remote Code Execution (RCE) when chained with other nodes.
Unauthenticated users can exploit Langflow to cause server-side space exhaustion via excessive file uploads and gain information leaks regarding file system paths.
The HAYAJO Mojolicious::Plugin::Web::Auth::OAuth2 Perl module uses a predictable state parameter, enabling CSRF-based session hijacking.
Predictable SSO tickets in ManageEngine ADSelfService Plus and related products allow unauthenticated attackers to perform account takeover.
Google go-attestation contains an improper validation vulnerability regarding index, position, or offset inputs, potentially leading to memory corruption or instability.
Spring Statemachine's persistence backends fail to enforce a class allowlist during deserialization, enabling potential remote code execution.
A vulnerability exists in NocoDB that may allow unauthorized access to database configurations or data.
A vulnerability exists within the Deno JavaScript/TypeScript runtime that may allow for unauthorized system-level interactions.
An improper output neutralization flaw in upKeeper Instant Privilege Access allows for log injection, tampering, or forging by an attacker.
Adobe Acrobat Reader 2020 is subject to a security vulnerability that may allow for unauthorized system impact if exploited by an attacker.
A missing symlink validation vulnerability in Language Servers for AWS allows for arbitrary file writes outside of the intended workspace trust boundary.
The Ultimate Member plugin for WordPress is vulnerable to account takeover via password reset link disclosure.
The Welcome Software Publishing plugin for WordPress is vulnerable to arbitrary options updates, potentially leading to privilege escalation.
A vulnerability in the Infility Global WordPress plugin may allow for unauthorized actions due to insufficient input validation.
Daytona contains a high-severity vulnerability within its infrastructure runtime for AI-generated code execution.
A high-severity security vulnerability exists within the Daytona infrastructure runtime, impacting AI-generated code execution environments.
NetComm NF20MESH routers are vulnerable to authenticated remote code execution via shell metacharacter injection in the username parameter.
The CPython tarfile module fails to handle EOF in streaming mode, allowing attackers to trigger an infinite loop via a malicious archive.
A high-severity vulnerability exists in FasterXML jackson-databind, potentially allowing unauthorized data manipulation or system compromise.
A high-severity security vulnerability in the FasterXML jackson-databind library could allow unauthorized system access through improper data-binding.
A security vulnerability has been identified in the Caddy server platform. The specific technical details regarding the nature of the flaw remain under investigation.
A security vulnerability has been identified in the Caddy server platform. The specific technical details regarding the nature of the flaw remain under investigation.
An authentication bypass vulnerability in NetComm NF20MESH routers allows unauthenticated attackers to gain administrative access via a hardcoded AES-256 key used for session cookies.
A vulnerability in the tarfile module of CPython allows for insecure handling of tar archives.
A denial-of-service vulnerability exists in the Elixir Plug framework's nested-parameter decoder due to inefficient algorithmic complexity.
A security vulnerability exists in OpenRemote software versions prior to 1.0, potentially exposing the system to unauthorized access.
A vulnerability exists within the Traefik HTTP reverse proxy and load balancer that may expose the system to unauthorized access or service disruption.
A security flaw has been identified in the Traefik HTTP reverse proxy that may impact its load balancing and traffic management capabilities.
A security vulnerability in the Traefik reverse proxy and load balancer could potentially be leveraged to compromise protected backend resources.
A security vulnerability has been identified in the n8n workflow automation platform that may allow for unauthorized access or system impact.
A security vulnerability has been identified in the n8n workflow automation platform that could potentially be leveraged to impact system integrity.
Style Dictionary, a build system for creating cross-platform styles, contains a prototype pollution vulnerability starting in version 4.
Langflow contains a critical vulnerability related to the deployment of AI-powered agents and workflows that may allow for unauthorized system interaction.
Revive Adserver 6 contains a vulnerability involving missing input validation during the saving of delivery limitations, which may lead to unauthorized system impacts.
Revive Adserver 6 is susceptible to a vulnerability involving improper validation of user input when saving delivery limitations, potentially allowing for unauthorized system modifications.
The n8n workflow automation platform contains a vulnerability that may allow for unauthorized system interaction or data exposure.
CafePlus by AKIN Software suffers from a missing authentication vulnerability, potentially allowing unauthorized access to critical functions.
A vulnerability in Anthropic’s Claude Desktop Cowork handling of VM images may allow for unauthorized operations or system interference.
Open WebUI contains a high-severity security vulnerability that could potentially allow unauthorized access or system compromise.
Crawl4AI, an open-source web scraping tool, contains a high-severity vulnerability that could be exploited to compromise host system security.
A high-severity vulnerability in the Open WebUI platform could allow unauthorized actors to compromise the security and integrity of the self-hosted AI service.
A security vulnerability has been identified in the n8n workflow automation platform that may allow for unauthorized system interaction.
A security flaw in the Open WebUI platform could allow an attacker to exploit input handling mechanisms, potentially leading to unauthorized operations.
A vulnerability in the Revive Adserver software allows for potential exploitation due to a lack of proper input sanitization in the zone-include function.
A security vulnerability exists in the n8n workflow automation platform that may allow for unauthorized system interaction.
A security vulnerability in the yt-dlp command-line utility may allow for arbitrary code execution or unauthorized system access during media processing.
A high-severity vulnerability in the yt-dlp utility could lead to unauthorized code execution during the processing of media streams.
Flowise versions prior to 3 are susceptible to an unspecified security vulnerability.
Capgo versions prior to 12 are affected by an unspecified vulnerability requiring immediate attention.
FlatPress is vulnerable to stored Cross-Site Scripting (XSS) via comment and contact form fields due to improper output encoding in Smarty templates.
Picklescan contains an unspecified vulnerability that may pose a significant security risk to users of the software.
Picklescan contains an unspecified vulnerability that may pose a significant security risk to users of the software.
Picklescan contains an unspecified vulnerability that may pose a significant security risk to users of the software.
A security vulnerability exists in picklescan that may allow for unauthorized code execution or data manipulation.
Capgo contains a high-severity security vulnerability that could lead to unauthorized system access or data exposure.
Crawl4AI is impacted by a security vulnerability that could permit unauthorized actions, requiring immediate attention from administrators.
A vulnerability in the foreman-mcp-server component of Red Hat Satellite may allow for unauthorized system interaction.
A security flaw in the RTK-AI command output filtering and compression mechanism may lead to improper handling of data sent to LLM contexts.
Language Servers for AWS contain a vulnerability related to improper trust boundary enforcement, potentially allowing unauthorized access.
Open WebUI is a self-hosted artificial intelligence platform that contains an unspecified security vulnerability requiring immediate attention.
A security vulnerability exists in Pivotal CRM that may allow unauthorized access or impact system integrity.