CVE-2025-4225: GitLab

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

An issue has been discovered in GitLab CE/EE affecting all versions from 14.1 before 18.1.5, 18.2 before 18.2.5, and 18.3 before 18.3.1 that that under certain conditions could have allowed an unauthenticated attacker to cause a denial-of-service condition affecting all users by sending specially crafted GraphQL requests.

Affected products

• GitLab GitLab: from 14.1.0, before 18.1.5 (fixed in 18.1.5); from 18.2.0, before 18.2.5 (fixed in 18.2.5); version 18.3.0 only

Published 2025-08-27. Last modified 2026-06-17.