CVE-2023-3964: GitLab

Medium severity, CVSS 4.3. EPSS: 0.5% chance of exploitation in the next 30 days.

An issue has been discovered in GitLab affecting all versions starting from 13.2 before 16.4.3, all versions starting from 16.5 before 16.5.3, all versions starting from 16.6 before 16.6.1. It was possible for users to access composer packages on public projects that have package registry disabled in the project settings.

Affected products

• GitLab GitLab: from 13.2.0, before 16.4.3 (fixed in 16.4.3); from 16.5.0, before 16.5.3 (fixed in 16.5.3); version 16.6.0 only

Published 2023-12-01. Last modified 2026-06-17.