CVE-2020-13321: GitLab

High severity, CVSS 8.3. EPSS: 1.4% chance of exploitation in the next 30 days.

A vulnerability was discovered in GitLab versions prior to 13.1. Username format restrictions could be bypassed allowing for html tags to be added.

Affected products

• GitLab GitLab: before 12.10.13 (fixed in 12.10.13); from 13.0.0, before 13.0.8 (fixed in 13.0.8); from 13.1.0, before 13.1.2 (fixed in 13.1.2)

Published 2020-09-30. Last modified 2026-06-17.