GitLab EE Authenticated Dev Users Delete Code Owner Rules (V11-18.11)
CVE-2026-6063 Published on May 14, 2026
Authorization Bypass Through User-Controlled Key in GitLab
GitLab has remediated an issue in GitLab EE affecting all versions from 11.10 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that under certain conditions could have allowed an authenticated user with developer-role permissions to remove code owner approval rules from merge requests due to improper access control.
Vulnerability Analysis
CVE-2026-6063 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 no impact on confidentiality, with no impact on integrity, and no impact on availability.
Weakness Type
What is an Insecure Direct Object Reference / IDOR Vulnerability?
The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.
CVE-2026-6063 has been classified to as an Insecure Direct Object Reference / IDOR vulnerability or weakness.
Products Associated with CVE-2026-6063
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Affected Versions
GitLab:- Version 11.10 and below 18.9.7 is affected.
- Version 18.10 and below 18.10.6 is affected.
- Version 18.11 and below 18.11.3 is affected.