Input validation error in Gitlab Community Edition and GitLab Enterprise Edition - CVE-2026-6976

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Main Vulnerability Database Vulnerabilities #VU134380

Input validation error in Gitlab Community Edition and GitLab Enterprise Edition - CVE-2026-6976

Published: June 11, 2026


Vulnerability identifier: #VU134380
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-6976
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: GitLab, Inc
Affected software:
Gitlab Community Edition
GitLab Enterprise Edition

Detailed vulnerability description

The vulnerability allows a remote user to hide changes from merge request diff views.

The vulnerability exists due to improper input validation in merge request diff when processing file names. A remote user can use crafted file names to hide changes from merge request diff views.

User interaction is required.


How to mitigate CVE-2026-6976

Install security update from vendor's website.

Sources