CVE-2026-15423: GitLab

High severity, CVSS 8.5. EPSS: 0.4% chance of exploitation in the next 30 days.

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.0 before 19.0.6, 19.1 before 19.1.4, and 19.2 before 19.2.2 that under certain conditions could have allowed an authenticated user with developer-role permissions to execute CI/CD pipelines on a protected branch without the required push permissions due to improper authorization in pipeline reference validation.

Affected products

• GitLab GitLab: from 19.0.0, before 19.0.6 (fixed in 19.0.6); from 19.1.0, before 19.1.4 (fixed in 19.1.4); from 19.2.0, before 19.2.2 (fixed in 19.2.2)

Published 2026-08-12. Last modified 2026-08-19.