CVE-2023-4008: GitLab

Critical severity, CVSS 9.8. EPSS: 0.7% chance of exploitation in the next 30 days.

An issue has been discovered in GitLab CE/EE affecting all versions starting from 15.9 before 16.0.8, all versions starting from 16.1 before 16.1.3, all versions starting from 16.2 before 16.2.2. It was possible to takeover GitLab Pages with unique domain URLs if the random string added was known.

Affected products

• GitLab GitLab: from 15.9.0, before 16.0.8 (fixed in 16.0.8); from 16.1, before 16.1.3 (fixed in 16.1.3); from 16.2, before 16.2.2 (fixed in 16.2.2)

Published 2023-08-03. Last modified 2026-06-17.