CVE-2025-4979: 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 before 17.10.7, 17.11 before 17.11.3, and 18.0 before 18.0.1. An attacker may be able to reveal masked or hidden CI variables (that they did not author) in the WebUI, by simply creating their own variable and observing the HTTP response.

Affected products

• GitLab GitLab: before 17.10.7 (fixed in 17.10.7); from 17.11.0, before 17.11.3 (fixed in 17.11.3); version 18.0.0 only

Published 2025-05-22. Last modified 2026-06-17.