CVE-2026-6269: GitLab

Medium severity, CVSS 5.4. EPSS: 0.3% chance of exploitation in the next 30 days.

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.10 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2 that under certain conditions could have allowed an authenticated user with developer-role permissions to modify hidden merge requests due to incorrect authorization enforcements.

Affected products

• GitLab GitLab: from 15.10.0, before 18.10.8 (fixed in 18.10.8); from 18.11.0, before 18.11.5 (fixed in 18.11.5); from 19.0.0, before 19.0.2 (fixed in 19.0.2)

Published 2026-06-11. Last modified 2026-06-17.