Access Control Flaw in GitLab CE/EE
CVE-2026-3607

4.3MEDIUM

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
14 May 2026

What is CVE-2026-3607?

GitLab has addressed a significant access control issue affecting multiple versions of GitLab CE/EE. This vulnerability permits authenticated users with developer-role permissions to bypass the intended package protection mechanisms. As a result, it exposes sensitive resources or functionalities that should remain restricted. Users are strongly advised to upgrade to the latest patched versions to ensure that proper security measures are reinstated and potential exploitation is mitigated.

Affected Version(s)

GitLab 18.3 < 18.9.7

GitLab 18.10 < 18.10.6

GitLab 18.11 < 18.11.3

References

https://hackerone.com/reports/3586233
technical-descriptionexploitpermissions-required
https://gitlab.com/gitlab-org/gitlab/-/work_items/592466
https://about.gitlab.com/releases/2026/05/13/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 [aphantom](https://hackerone.com/aphantom) for reporting this vulnerability through our HackerOne bug bounty program
.