CVE-2023-2576: Incorrect Authorization in GitLab

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-07-13 · updated 2026-06-17
Weakness: CWE-863

Description

An issue has been discovered in GitLab CE/EE affecting all versions starting from 13.7 before 15.11.10, all versions starting from 16.0 before 16.0.6, all versions starting from 16.1 before 16.1.1. This allowed a developer to remove the CODEOWNERS rules and merge to a protected branch.

Affected products

GitLab: from 13.7.0 before 15.11.10; from 16.0.0 before 16.0.6; from 16.1.0 before 16.1.1 — fixed in 15.11.10, 16.0.6, 16.1.1

How to fix

Upgrade to a fixed version: GitLab 15.11.10, 16.0.6, 16.1.1. Check the vendor advisory for mitigations.

References

https://gitlab.com/gitlab-org/gitlab/-/issues/410123
https://hackerone.com/reports/1898054
https://gitlab.com/gitlab-org/gitlab/-/issues/410123
https://hackerone.com/reports/1898054

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