CVE-2026-5377: Improper Access Control issue in issue description renderer impacts GitLab CE/EE
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.
Other sources
GitLab has remediated an issue 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.
— GitLab
Affected Software
Remediation
Information
Event History
Peer vulnerabilities
Found alongside the following vulnerabilities.
Frequently Asked Questions
What is the severity of CVE-2026-5377?
CVE-2026-5377 is classified as a medium severity vulnerability due to improper access control allowing unauthorized access to private issue titles.
How do I fix CVE-2026-5377?
To remediate CVE-2026-5377, upgrade GitLab CE/EE to version 18.11.1 or later.
What versions of GitLab are affected by CVE-2026-5377?
CVE-2026-5377 affects all GitLab CE/EE versions from 18.11 before 18.11.1.
What impact does CVE-2026-5377 have on GitLab projects?
CVE-2026-5377 allows authenticated users to access titles of confidential or private issues within public projects.
Is CVE-2026-5377 a zero-day vulnerability?
CVE-2026-5377 is not a zero-day vulnerability, as it has been publicly documented and patched in the release of GitLab 18.11.1.