🔐 CVE Alert

CVE-2023-6840

MEDIUM 6.7

Missing Authorization in GitLab

CVSS Score
6.7
EPSS Score
0.0%
EPSS Percentile
1th

An issue has been discovered in GitLab EE affecting all versions from 16.4 prior to 16.6.7, 16.7 prior to 16.7.5, and 16.8 prior to 16.8.2 which allows a maintainer to change the name of a protected branch that bypasses the security policy added to block MR.

CWE CWE-862
Vendor gitlab
Product gitlab
Ecosystems
Industries
Technology
Published Feb 7, 2024
Last Updated Apr 24, 2026
Stay Ahead of the Next One

Get instant alerts for gitlab gitlab

Be the first to know when new medium vulnerabilities affecting gitlab gitlab are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
High
Availability
High

Affected Versions

GitLab / GitLab
16.4 < 16.6.7 16.7 < 16.7.5 16.8 < 16.8.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗
gitlab.com: https://gitlab.com/gitlab-org/gitlab/-/issues/435500 hackerone.com: https://hackerone.com/reports/2280292

Credits

Thanks [js_noob](https://hackerone.com/js_noob) for reporting this vulnerability through our HackerOne bug bounty program