CVE-2023-2030: Improper Verification of Cryptographic Signature in GitLab

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-01-12 · updated 2026-06-17
Weakness: CWE-347

Description

An issue has been discovered in GitLab CE/EE affecting all versions from 12.2 prior to 16.5.6, 16.6 prior to 16.6.4, and 16.7 prior to 16.7.2 in which an attacker could potentially modify the metadata of signed commits.

Affected products

GitLab: from 12.2.0 before 16.5.6; from 16.6.0 before 16.6.4; 16.7.0, 16.7.1 — fixed in 16.5.6, 16.6.4

How to fix

Upgrade to a fixed version: GitLab 16.5.6, 16.6.4. Check the vendor advisory for mitigations.

References

https://gitlab.com/gitlab-org/gitlab/-/issues/407252
https://hackerone.com/reports/1929929
https://gitlab.com/gitlab-org/gitlab/-/issues/407252
https://hackerone.com/reports/1929929

Get alerted when CVE-2023-2030 or the next vulnerability affects your stack