CVE-2023-5226

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.

CVSS v3.1

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

CVSS v3.1

4.8 MEDIUMCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N

EPSS

0.55% chance of exploitation in the next 30 days, 44th percentile

Published

2023-12-01

Updated

2026-08-14

Proof-of-concept exploits (1)

• https://hackerone.com/reports/2173053

References

• CVE Record
• NVD entry

Related

• CVE-2023-52257
• CVE-2023-52268
• CVE-2023-52252
• CVE-2023-52269
• CVE-2023-52251
• CVE-2023-52271