CVE-2025-2934: GitLab

Medium severity, CVSS 6.5. EPSS: 0.5% chance of exploitation in the next 30 days.

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 5.2 prior to 18.2.8, 18.3 prior to 18.3.4, and 18.4 prior to 18.4.2 that could have allowed an authenticated attacker to create a denial of service condition by configuring malicious webhook endpoints that send crafted HTTP responses.

Affected products

• GitLab GitLab: from 5.2.0, before 18.2.8 (fixed in 18.2.8); from 18.3.0, before 18.3.4 (fixed in 18.3.4); from 18.4.0, before 18.4.2 (fixed in 18.4.2)

Published 2025-10-09. Last modified 2026-06-17.