GitLab auth allows blocked PAT to access resources before 18.10.7/18.11.4/19.0.1
CVE-2026-9807 Published on May 28, 2026
Incorrect Authorization in GitLab
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.9 before 18.10.7, 18.11 before 18.11.4, and 19.0 before 19.0.1 that under certain conditions could have allowed a blocked Project Access Token to continue accessing private resources due to incorrect authorization enforcement.
Vulnerability Analysis
CVE-2026-9807 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. Public availability of a proof of concept (POC) exploit exists for CVE-2026-9807. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality, a small impact on integrity and 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-2026-9807 has been classified to as an AuthZ vulnerability or weakness.
Products Associated with CVE-2026-9807
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Affected Versions
GitLab:- Version 18.9 and below 18.10.7 is affected.
- Version 18.11 and below 18.11.4 is affected.
- Version 19.0 and below 19.0.1 is affected.