CVE-2025-12562: GitLab

High severity, CVSS 7.5. EPSS: 0.9% chance of exploitation in the next 30 days.

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 11.10 before 18.4.6, 18.5 before 18.5.4, and 18.6 before 18.6.2 that could have allowed an unauthenticated user to create a denial of service condition by sending crafted GraphQL queries that bypass query complexity limits.

Affected products

• GitLab GitLab: from 11.10.0, before 18.4.6 (fixed in 18.4.6); from 18.5.0, before 18.5.4 (fixed in 18.5.4); from 18.6.0, before 18.6.2 (fixed in 18.6.2)

Published 2025-12-11. Last modified 2026-06-17.