Authorization Flaw in GitLab CE/EE by GitLab
CVE-2026-4524

6.5MEDIUM

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
14 May 2026

What is CVE-2026-4524?

An authorization flaw in GitLab CE/EE allowed authenticated users to access confidential issue content within public projects without the necessary permissions. This issue, stemming from inadequate authorization checks, affected multiple versions of the product including those prior to 18.9.7, 18.10.6, and 18.11.3. Users are encouraged to upgrade to the latest versions to ensure proper security measures are in place.

Affected Version(s)

GitLab 18.9.1 < 18.9.7

GitLab 18.10 < 18.10.6

GitLab 18.11 < 18.11.3

References

https://gitlab.com/gitlab-org/gitlab/-/work_items/594295
https://hackerone.com/reports/3597717
technical-descriptionexploitpermissions-required
https://about.gitlab.com/releases/2026/05/13/patch-releas...

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

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