CVE-2026-51953 in FeehiCMS
Summary
by MITRE • 08/01/2026
An issue in FeehiCMS v.2.1.1 allows an attacker to escalate privileges via the Session management module, authentication logic, logout handler components
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Analysis
by VulDB Data Team • 08/01/2026
The vulnerability in FeehiCMS version 2.1.1 represents a critical privilege escalation flaw within the session management framework that directly impacts the authentication system's integrity. This weakness stems from insufficient validation mechanisms in the logout handler components, creating an exploitable condition where authenticated users can manipulate their session state to gain elevated privileges. The issue resides in the core authentication logic module where session tokens are not properly invalidated or revalidated upon logout operations, allowing attackers to potentially reuse compromised sessions or bypass normal access controls.
The technical implementation of this vulnerability demonstrates a failure in proper session lifecycle management where the system does not adequately enforce session invalidation when users attempt to log out. This flaw enables attackers to maintain persistent access to administrative functions or elevated user privileges beyond their intended session duration. The authentication logic components fail to properly validate session integrity, creating opportunities for malicious actors to manipulate session identifiers or exploit race conditions during logout processes. Such weaknesses align with common security vulnerabilities documented under cwe-285 which addresses improper authorization and cwe-306 which covers missing authentication.
The operational impact of this privilege escalation vulnerability extends beyond simple unauthorized access, as it allows attackers to potentially compromise entire administrative systems within the CMS environment. An attacker who successfully exploits this flaw could gain access to sensitive configuration data, user management capabilities, content editing privileges, and other administrative functions that should be restricted to authorized personnel only. The vulnerability's exploitation potential increases significantly when combined with other attack vectors such as session hijacking or cross-site scripting attacks that might already exist within the application framework.
Security mitigations for this vulnerability require comprehensive session management improvements including mandatory session invalidation upon logout operations, proper token rotation mechanisms, and enhanced authentication state validation. Organizations should implement robust session timeout policies, ensure proper session cleanup procedures are executed during logout sequences, and establish monitoring systems to detect anomalous session behavior. The implementation of secure session management practices should follow established frameworks such as those recommended by the open web application security project owasp and align with mitre att&ck framework techniques targeting credential access and privilege escalation. Additionally, regular security assessments and code reviews focusing on authentication modules should be conducted to identify similar vulnerabilities within the application's architecture and prevent future exploitation attempts.