CVE-2021-39914: GitLab

Medium severity, CVSS 4.3. EPSS: 1.2% chance of exploitation in the next 30 days.

A regular expression denial of service issue in GitLab versions 8.13 to 14.2.5, 14.3.0 to 14.3.3 and 14.4.0 could cause excessive usage of resources when a specially crafted username was used when provisioning a new user

Affected products

• GitLab GitLab: from 8.13.0, before 14.2.6 (fixed in 14.2.6); from 14.3.0, before 14.3.4 (fixed in 14.3.4); version 14.4.0 only

Published 2021-11-04. Last modified 2026-06-17.