CVE-2026-66376 in Artifactory
Summary
by MITRE • 08/12/2026
Credentials for a deleted user may remain valid for a short period under specific conditions.
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Analysis
by VulDB Data Team • 08/12/2026
This vulnerability represents a credential lifecycle management issue that occurs when user authentication tokens or access credentials persist in valid states even after a user account has been removed from the system. The flaw typically manifests when deletion processes fail to immediately invalidate all associated authentication mechanisms, creating a temporal window where former users can potentially maintain access to systems, applications, or resources. This condition violates fundamental security principles of least privilege and proper access revocation, as it allows for unauthorized access through credentials that should no longer be functional.
The technical implementation of this vulnerability often stems from asynchronous deletion processes where account removal triggers cascading operations that do not immediately propagate to all authentication services or token repositories. Database records may be marked for deletion but not physically removed, while session tokens remain active in memory or cache systems. Additionally, distributed systems may experience inconsistencies where some components recognize the user as deleted while others maintain valid credentials, creating a fragmented security posture. This behavior aligns with CWE-285, which addresses improper authorization in authentication systems, and specifically relates to CWE-613, concerning insufficient session expiration.
The operational impact of this vulnerability creates significant risk for organizations across multiple attack vectors. Adversaries can exploit the credential validity window to gain unauthorized access to sensitive data, systems, or applications during the period between account deletion and actual credential invalidation. This temporal gap provides opportunities for privilege escalation attacks when former employees retain access to corporate resources, potentially leading to data breaches, insider threats, or compliance violations. The vulnerability also undermines audit trails and access control mechanisms, making it difficult for security teams to maintain accurate user access records and detect unauthorized activities.
Mitigation strategies must address both immediate remediation and systemic prevention measures to eliminate the credential validity window. Organizations should implement synchronous deletion processes that immediately invalidate all authentication tokens across all systems and services upon user account removal. Automated systems should ensure that session management, token repositories, and cache invalidation occur simultaneously with account deletion operations. Security teams must establish monitoring protocols to detect and alert on access patterns from recently deleted accounts, while implementing robust session management policies that enforce immediate credential revocation. The approach should align with the principle of least privilege and incorporate continuous access review processes as recommended in the NIST SP 800-53 security controls framework. Additionally, organizations should consider implementing zero-trust architecture principles where authentication is continuously verified regardless of account status, reducing the window of opportunity for exploitation through this credential lifecycle gap.