CVE-2026-12635: GitLab

Low severity, CVSS 3.1. EPSS: 0.2% chance of exploitation in the next 30 days.

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 8.3 before 18.11.6, 19.0 before 19.0.3, and 19.1 before 19.1.1 that under certain conditions could have allowed an authenticated user with maintainer-role permissions to make requests to internal network resources through mirror synchronization due to improper URL validation.

Affected products

• GitLab GitLab: from 8.3.0, before 18.11.6 (fixed in 18.11.6); from 19.0.0, before 19.0.3 (fixed in 19.0.3); version 19.1.0 only

Published 2026-06-25. Last modified 2026-06-26.