CVE-2023-4378: GitLab

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

An issue has been discovered in GitLab CE/EE affecting all versions starting from 11.8 before 16.1.5, all versions starting from 16.2 before 16.2.5, all versions starting from 16.3 before 16.3.1. A malicious Maintainer can, under specific circumstances, leak the sentry token by changing the configured URL in the Sentry error tracking settings page. This was as a result of an incomplete fix for CVE-2022-4365.

Affected products

• GitLab GitLab: from 11.8.0, before 16.1.5 (fixed in 16.1.5); from 16.2, before 16.2.5 (fixed in 16.2.5); version 16.3.0 only

Published 2023-09-01. Last modified 2026-06-17.