GitLab EE Auth Bypass in EE 17.9-19.4.1: Guest can read private security policy
CVE-2026-10518 Published on September 29, 2026
Incorrect Authorization in GitLab
GitLab has remediated an issue in GitLab EE affecting all versions from 17.9 before 19.2.7, 19.3 before 19.3.3, and 19.4 before 19.4.1 that under certain conditions could have allowed an authenticated user with guest-level permissions to read private security policy content they were not authorized to access due to improper authorization enforcement.
Vulnerability Analysis
CVE-2026-10518 is exploitable 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 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-2026-10518 has been classified to as an AuthZ vulnerability or weakness.
Products Associated with CVE-2026-10518
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Affected Versions
GitLab:- Version 17.9 and below 19.2.7 is affected.
- Version 19.3 and below 19.3.3 is affected.
- Version 19.4 and below 19.4.1 is affected.