CVE-2021-39873: GitLab

Medium severity, CVSS 4.3. EPSS: 1% chance of exploitation in the next 30 days.

In all versions of GitLab CE/EE, there exists a content spoofing vulnerability which may be leveraged by attackers to trick users into visiting a malicious website by spoofing the content in an error response.

Affected products

• GitLab GitLab: from 1.0.0, before 14.1.7 (fixed in 14.1.7); from 14.2.0, before 14.2.5 (fixed in 14.2.5); version 4.3.0 only

Published 2021-10-04. Last modified 2026-06-17.