GitLab CE/EE Auth Bypass via Finegranulated PAT (19.2.8, 19.3.5, 19.4.2)
CVE-2026-78335 Published on October 13, 2026
Incorrect Authorization in GitLab
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.1 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain conditions, could have allowed an authenticated user holding a project-scoped fine-grained Personal Access Token to modify integrations belonging to a group outside the token's scope, due to incorrect authorization checks.
Vulnerability Analysis
CVE-2026-78335 can be exploited with network access, and requires small amount of user privileges. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality and integrity, and no impact on availability.
Weakness Type
What is an AuthZ Vulnerability?
The software performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.
CVE-2026-78335 has been classified to as an AuthZ vulnerability or weakness.
Products Associated with CVE-2026-78335
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Affected Versions
GitLab:- Version 19.1 and below 19.2.8 is affected.
- Version 19.3 and below 19.3.5 is affected.
- Version 19.4 and below 19.4.2 is affected.