Vulnerability · Published Apr 22, 2026 · Assigned by GitLab
CVE-2026-5377Incorrect Authorization in GitLab
Medium 4.3
In plain English
A medium-severity incorrect authorization in GitLab from GitLab. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities).
Severity (CVSS 3.1)4.3Medium
Exploit odds (30 days)0.3%top 82.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
References
- https://gitlab.com/gitlab-org/gitlab/-/work_items/595553
- HackerOne Bug Bounty Report #3640688 technical-description, exploit, permissions-required
- https://about.gitlab.com/releases/2026/04/22/patch-release-gitlab-18-11-1-released/