Vulnerability · Published May 14, 2026 · Assigned by GitLab
CVE-2026-4527Cross-Site Request Forgery (CSRF) in GitLab
Medium 6.5
In plain English
A medium-severity cross-site request forgery 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 0.2% (higher than 9% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.2%top 91.1% 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 11.10 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an unauthenticated user to create unauthorized Jira subscriptions for a targeted user's namespace via a specially crafted link due to missing CSRF protection.
Affected products (as reported)
Weakness: CWE-352 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
References
- https://gitlab.com/gitlab-org/gitlab/-/work_items/594339
- HackerOne Bug Bounty Report #3590487 technical-description, exploit, permissions-required
- https://about.gitlab.com/releases/2026/05/13/patch-release-gitlab-18-11-3-released/