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CVE-2023-6840
Missing Authorization in GitLab
Medium6.7EPSS 0.56%
- Published
- Updated
- Reserved
- Assigned by
- GitLab
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitLabCNA (assigner) | 3.1 | Medium6.7 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:H |
| NVDNVD · Modified | 3.1 | Medium6.7 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.56% · top 53% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.7.
Weakness
Affected products
What to do
Solution: Upgrade to versions 16.8.2, 16.7.5, 16.6.7 or above.
References (2)
- GitLab Issue #435500 (opens in a new tab)issue-trackingpermissions-requiredx_transferred
- HackerOne Bug Bounty Report #2280292 (opens in a new tab)technical-descriptionexploitpermissions-requiredx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-6840)Record last updated .