A high-severity vulnerability has been identified in multiple products from the vendor 'was', including EasyCMS. This flaw could allow an authenticated attacker with low-level privileges to access and exfiltrate sensitive data from the underlying database, potentially leading to a significant data breach. Organizations are urged to apply the vendor-provided security updates immediately to mitigate the risk of data exposure and loss of system integrity.

The vulnerability is an authenticated SQL injection flaw within the application's data management interface. An attacker with valid, low-privilege user credentials can craft malicious SQL queries and submit them through specific input fields that lack proper server-side sanitization. Successful exploitation allows the attacker to bypass access controls and directly query the database, enabling them to read, modify, or delete sensitive information, including user credentials, personal identifiable information (PII), and other critical business data.

This vulnerability is rated as High severity with a CVSS score of 7.3. Exploitation could have a significant business impact, primarily through a confidentiality breach. The unauthorized exfiltration of sensitive customer or corporate data could lead to severe reputational damage, loss of customer trust, and potential regulatory fines under data protection laws like GDPR or CCPA. Furthermore, stolen credentials could be used to facilitate deeper network intrusion, escalating the initial compromise into a more widespread security incident.

Immediate Action: The primary remediation is to apply the security updates released by the vendor across all affected systems immediately. System administrators should follow their standard change management process to deploy the patches, prioritizing internet-facing and critical systems. After patching, it is crucial to review access and application logs for any signs of compromise that may have occurred before the patch was applied.

Proactive Monitoring: Security teams should actively monitor for exploitation attempts. This includes configuring web application firewall (WAF) and intrusion detection systems (IDS) to detect and block SQL injection signatures. Review web server and database logs for unusual or malformed queries originating from the application, especially those containing SQL keywords like UNION, SELECT, SLEEP, or comment characters (--, #). Monitor for anomalous outbound network traffic, which could indicate data exfiltration.

Compensating Controls: If patching cannot be performed immediately, implement compensating controls to reduce the risk. Deploy a Web Application Firewall (WAF) with a specific ruleset designed to block SQL injection attacks. Restrict network access to the application's administrative interfaces to trusted IP addresses only. Enforce the principle of least privilege for all application user accounts to limit the potential impact of a compromised low-privilege account.

Public Exploit Available: false

Given the High severity rating (CVSS 7.3) and the potential for a significant data breach, we strongly recommend that organizations prioritize the immediate patching of CVE-2026-1105. All systems running the affected software versions should be identified and updated without delay. While this vulnerability is not currently on the CISA KEV list, its high impact makes it a critical vulnerability to address. Proactive monitoring and the implementation of compensating controls, such as a WAF, should be considered essential secondary measures to protect against potential exploitation.