Vulnerability · Published May 14, 2026 · Assigned by GitLab
CVE-2026-4524Authentication Bypass Using an Alternate Path or Channel in GitLab
Medium 6.5
In plain English
A medium-severity authentication bypass 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 22% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.3%top 78.2% 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 18.9.1 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an authenticated user to access confidential issue content in public projects without proper authorization due to improper authorization checks.
Affected products (as reported)
Weakness: CWE-288 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
References
- https://gitlab.com/gitlab-org/gitlab/-/work_items/594295
- HackerOne Bug Bounty Report #3597717 technical-description, exploit, permissions-required
- https://about.gitlab.com/releases/2026/05/13/patch-release-gitlab-18-11-3-released/