CVE-2021-39931: GitLab

Medium severity, CVSS 4.3. EPSS: 0.9% chance of exploitation in the next 30 days.

An issue has been discovered in GitLab CE/EE affecting all versions starting from 8.11 before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2. Under specific condition an unauthorised project member was allowed to delete a protected branches due to a business logic error.

Affected products

• GitLab GitLab: from 8.11.0, before 14.3.6 (fixed in 14.3.6); from 14.4.0, before 14.4.4 (fixed in 14.4.4); from 14.5.0, before 14.5.2 (fixed in 14.5.2)

Published 2021-12-13. Last modified 2026-06-17.