CVE-2023-6051: Improper Control of Generation of Code ('Code Injection') in GitLab

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-12-15 · updated 2026-06-17
Weakness: CWE-94

Description

An issue has been discovered in GitLab CE/EE affecting all versions before 16.4.4, all versions starting from 16.5 before 16.5.4, all versions starting from 16.6 before 16.6.2. File integrity may be compromised when source code or installation packages are pulled from a specific tag.

Affected products

GitLab: before 16.4.4; from 16.5.0 before 16.5.4; from 16.6.0 before 16.6.2 — fixed in 16.4.4, 16.5.4, 16.6.2

How to fix

Upgrade to a fixed version: GitLab 16.4.4, 16.5.4, 16.6.2. Check the vendor advisory for mitigations.

References

https://gitlab.com/gitlab-org/gitlab/-/issues/431345
https://hackerone.com/reports/2237165
https://gitlab.com/gitlab-org/gitlab/-/issues/431345
https://hackerone.com/reports/2237165

Get alerted when CVE-2023-6051 or the next vulnerability affects your stack