GitLab <=18.11.1 Improper ACL in Issue Render
CVE-2026-5377 Published on April 22, 2026
Incorrect Authorization in GitLab
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.11 before 18.11.1 that could have allowed an authenticated user to access titles of confidential or private issues in public projects due to improper access control in the issue description rendering process.
Vulnerability Analysis
CVE-2026-5377 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 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-2026-5377 has been classified to as an AuthZ vulnerability or weakness.
Products Associated with CVE-2026-5377
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Affected Versions
GitLab:- Version 18.11 and below 18.11.1 is affected.