CVE-2023-5226

7.5 highEPSS 0.5%

High (7.5) in gitlab gitlab. EPSS 0.5% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.5 high

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

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 45% of CVEs (scores of 2026-10-31)
CWE: CWE-94
Published: 2023-12-01
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

gitlab:gitlab

References

https://gitlab.com/gitlab-org/gitlab/-/issues/426400
https://hackerone.com/reports/2173053
https://gitlab.com/gitlab-org/gitlab/-/issues/426400
https://hackerone.com/reports/2173053

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