CVE-2020-13270: GitLab

High severity, CVSS 8.8. EPSS: 1.4% chance of exploitation in the next 30 days.

Missing permission check on fork relation creation in GitLab CE/EE 11.3 and later through 13.0.1 allows guest users to create a fork relation on restricted public projects via API

Affected products

• GitLab GitLab: from 11.3.0, before 11.9.8 (fixed in 11.9.8); from 11.3.0, before 12.9.8 (fixed in 12.9.8); from 12.10.0, before 12.10.7 (fixed in 12.10.7); from 13.0.0, before 13.0.1 (fixed in 13.0.1)

Published 2020-06-10. Last modified 2026-06-17.