CVE-2025-11447: GitLab

High severity, CVSS 7.5. EPSS: 0.8% chance of exploitation in the next 30 days.

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 11.0 before 18.3.5, 18.4 before 18.4.3, and 18.5 before 18.5.1 that could have allowed an unauthenticated attacker to cause a denial of service condition by sending GraphQL requests with crafted JSON payloads.

Affected products

• GitLab GitLab: from 11.0.0, before 18.3.5 (fixed in 18.3.5); from 18.4.0, before 18.4.3 (fixed in 18.4.3); version 18.5.0 only

Published 2025-10-27. Last modified 2026-06-17.