CVE-2026-92920 in admin3
Summary
by MITRE • 09/17/2026
admin3 through 3.0.0 fails to invalidate existing sessions when disabling a user account, allowing attackers to retain authenticated access with original permissions. Attackers can continue using bearer tokens issued before account disablement to authenticate requests, as the AuthInterceptor never re-validates the user's locked status and session expiry resets on each request.
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Analysis
by VulDB Data Team • 09/17/2026
The vulnerability in admin3 versions through 3.0.0 represents a critical failure in identity lifecycle management, specifically within the authentication and authorization subsystems. The core technical flaw lies in the application logic that governs state transitions for user accounts. When an administrator disables or locks a user account, the system fails to invalidate existing active sessions associated with that account. This oversight means that any bearer tokens previously issued to the compromised or disabled user remain valid within the context of the API gateway and backend services. The AuthInterceptor component, which is responsible for validating incoming requests, does not perform a real-time check against the current status of the user in the identity store before processing authenticated requests. Instead, it relies on the validity period of the token itself without cross-referencing the account's active state.
This architectural deficiency leads to a scenario where session expiry resets dynamically with each request made by an attacker using a valid but stale bearer token. As long as the user continues to send requests before the absolute expiration time defined in the JWT or session cookie, the system treats these interactions as legitimate and authorized. Consequently, even after an account has been administratively disabled due to suspected compromise, policy violation, or employee termination, the attacker retains full authenticated access with all original permissions. This effectively nullifies one of the primary incident response mechanisms available to security teams: immediate user disablement. The inability to revoke active sessions instantly creates a significant window of opportunity for malicious actors to exfiltrate data, modify configurations, or pivot further into the network using trusted credentials that should have been rendered useless upon account lockout.
From an industry standards perspective, this vulnerability aligns with CWE-613, Insufficient Session Expiration, and more critically CWE-287, Improper Authentication, due to the failure to verify current authorization status during each interaction. It also maps directly to MITRE ATT&CK technique T1078, Valid Accounts, where adversaries leverage legitimate credentials that have not been properly revoked following a security event or personnel change. The persistence of access despite account disablement is a classic example of insufficient session management controls often found in web applications and API frameworks that prioritize performance over strict state validation on every hop.
To mitigate this risk, immediate remediation steps must focus on enforcing server-side session invalidation upon user status changes. Implementing an authentication middleware or interceptor that queries the identity provider for the current account status before processing any request is essential. This check should occur regardless of whether the bearer token itself has expired. Additionally, organizations should implement short-lived access tokens paired with refresh tokens stored securely on the server side, allowing for immediate revocation when a user is disabled. If using JWTs without blacklisting capabilities, consider implementing an external cache such as Redis to track revoked or invalidated tokens and check this list during every authentication attempt. Regular security audits of identity lifecycle management processes are also recommended to ensure that all components involved in the authentication chain adhere to zero-trust principles where no session is implicitly trusted based solely on past validity.