CVE-2026-6976

LOW 3.7

Authorization Bypass Through User-Controlled Key in GitLab

CVSS Score

3.7

EPSS Score

0.0%

EPSS Percentile

0th

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.9 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2 that under certain conditions could have allowed an authenticated user with developer-role permissions to hide changes from merge request diff views due to improper input handling of file names.

CWE	CWE-639
Vendor	gitlab
Product	gitlab
Ecosystems	DevTools
Industries	Technology
Published	Jun 11, 2026
Last Updated	Jun 11, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

GitLab / GitLab

15.9 < 18.10.8 18.11 < 18.11.5 19.0 < 19.0.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

gitlab.com: https://gitlab.com/gitlab-org/gitlab/-/work_items/598165 hackerone.com: https://hackerone.com/reports/3638136 about.gitlab.com: https://about.gitlab.com/releases/2026/06/10/patch-release-gitlab-19-0-2-released/

Credits

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