CVE-2026-4398: GitLab

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

GitLab has remediated an issue in GitLab EE affecting all versions from 18.3 before 19.1.7, 19.2 before 19.2.5, and 19.3 before 19.3.1 that, under certain conditions, an authenticated user could have assigned compliance frameworks from namespaces they were not authorized to access to their own project, due to missing namespace validation on self-managed instances.

Affected products

• GitLab GitLab: from 18.3.0, before 19.1.7 (fixed in 19.1.7); from 19.2.0, before 19.2.5 (fixed in 19.2.5); version 19.3.0 only

Published 2026-04-08. Last modified 2026-09-28.