Main Vulnerability Database Vulnerabilities #VU134376

Improper access control in Gitlab Community Edition and GitLab Enterprise Edition - CVE-2026-6269

Published: June 11, 2026

Vulnerability identifier: #VU134376

CSH Severity: Low

CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-6269

CWE-ID: CWE-284

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote user to modify hidden merge requests.

The vulnerability exists due to improper access control in the Merge Requests API when handling requests to hidden merge requests. A remote user can send crafted API requests to modify hidden merge requests.

The issue affects users with developer-role permissions.

Affected software

Gitlab Community Edition
GitLab Enterprise Edition

How to mitigate CVE-2026-6269

Install security update from vendor's website.

Gitlab Community Edition - addressed in versions 18.10.8, 18.11.5, 19.0.2
GitLab Enterprise Edition - addressed in versions 18.10.8, 18.11.5, 19.0.2

External References

https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-0-2-released/

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