CVE-2026-4527: GitLab

Medium severity, CVSS 6.5. EPSS: 0.3% chance of exploitation in the next 30 days.

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

• GitLab GitLab: from 11.10.0, before 18.9.7 (fixed in 18.9.7); from 18.10.0, before 18.10.6 (fixed in 18.10.6); from 18.11.0, before 18.11.3 (fixed in 18.11.3)

Published 2026-05-14. Last modified 2026-06-17.