Authorization Flaw in GitLab EE Affects Multiple Versions
CVE-2026-6277

4.3MEDIUM

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
11 June 2026

What is CVE-2026-6277?

An authorization issue exists in GitLab EE that enables authenticated users with Security Manager-role permissions to alter project security configurations, even when the feature is disabled. This vulnerability affects various versions of GitLab EE and arises from inadequate authorization enforcement, potentially allowing users to manage security settings without proper consent. Security teams should review affected versions to ensure the integrity of project security management.

Affected Version(s)

GitLab 13.9 < 18.10.8

GitLab 18.11 < 18.11.5

GitLab 19.0 < 19.0.2

References

https://gitlab.com/gitlab-org/gitlab/-/work_items/596656
https://hackerone.com/reports/3662615
technical-descriptionexploitpermissions-required
https://about.gitlab.com/releases/2026/06/10/patch-releas...

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

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