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Status published
Medium
CVE-2023-6840
Missing Authorization in GitLab
Vulnerability Description
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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Thanks [js_noob](https://hackerone.com/js_noob) for reporting this vulnerability through our HackerOne bug bounty program
References
More from GitLab
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Insertion of Sensitive Information Into Sent Data in GitLab
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7.7
CVE-2025-9957
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Low
2.7
CVE-2025-9825
Missing Authorization in GitLab
Medium
5
CVE-2025-9642
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
High
8.7
CVE-2025-9484
Missing Authorization in GitLab
Medium
4.3
Affected Vendor
GitLab
View all reports →Affected Software
GitLab
Vulnerable Versions:
16.4, 16.7, 16.8
Timeline
Official Publish:
February 7th, 2024
Last Modified:
April 24th, 2026
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:H