GitLab EE IP Bypass via Merge Request API v12.0-19.2.2
CVE-2026-6821 Published on August 12, 2026
Missing Authorization in GitLab
GitLab has remediated an issue in GitLab EE affecting all versions from 12.0 before 19.0.6, 19.1 before 19.1.4, and 19.2 before 19.2.2 that under certain conditions could have allowed an authenticated user to bypass IP-based access restrictions and read limited merge request information from a private project due to missing authorization checks in a merge requests API endpoint.
Vulnerability Analysis
CVE-2026-6821 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. 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 does not perform an authorization check when an actor attempts to access a resource or perform an action.
CVE-2026-6821 has been classified to as an AuthZ vulnerability or weakness.
Products Associated with CVE-2026-6821
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Affected Versions
GitLab:- Version 12.0 and below 19.0.6 is affected.
- Version 19.1 and below 19.1.4 is affected.
- Version 19.2 and below 19.2.2 is affected.