CVE-2023-5226

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

An issue has been discovered in GitLab affecting all versions before 16.4.3, all versions starting from 16.5 before 16.5.3, all versions starting from 16.6 before 16.6.1. Under certain circumstances, a malicious actor bypass prohibited branch checks using a specially crafted branch name to manipulate repository content in the UI.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Weakness enumeration

CWE-94

Affected software

Vendor	Product	Versions
GitLab	GitLab	< 16.4.3; >= 16.5, < 16.5.3; >= 16.6, < 16.6.1

References

https://gitlab.com/gitlab-org/gitlab/-/issues/426400Broken Link, Vendor Advisory
https://hackerone.com/reports/2173053Permissions Required, Third Party Advisory
https://gitlab.com/gitlab-org/gitlab/-/issues/426400Broken Link, Vendor Advisory
https://hackerone.com/reports/2173053Permissions Required, Third Party Advisory

Timeline

Published: Dec 1, 2023
Last modified: Jun 17, 2026
NVD status: Modified

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