Authorization Flaw in GitLab EE Affects Multiple Versions
CVE-2026-10518

4.3MEDIUM

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
29 September 2026

What is CVE-2026-10518?

GitLab EE has encountered an issue affecting various versions that may allow authenticated users with guest-level permissions to improperly access private security policy content. The vulnerability arises from inadequate enforcement of authentication rules, potentially exposing sensitive information to users without the necessary authorization.

Affected Version(s)

GitLab 17.9 < 19.2.7

GitLab 19.3 < 19.3.3

GitLab 19.4 < 19.4.1

References

https://gitlab.com/gitlab-org/gitlab/-/work_items/601723
https://hackerone.com/reports/3686230
technical-descriptionexploitpermissions-required
https://docs.gitlab.com/releases/patches/patch-release-gi...

CVSS V3.1

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

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

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