Improper Authorization in GitLab CE/EE by GitLab
CVE-2026-2238

5.3MEDIUM

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
25 June 2026

What is CVE-2026-2238?

An issue was identified in GitLab CE/EE that could permit unauthenticated users to access confidential issue references on public projects. This vulnerability arises from inadequate authorization checks, potentially exposing sensitive information to unauthorized parties. GitLab has addressed this issue in their recent updates, emphasizing the importance of applying the latest security patches to mitigate the risk of unauthorized data exposure.

Affected Version(s)

GitLab 17.5 < 18.11.6

GitLab 19.0 < 19.0.3

GitLab 19.1 < 19.1.1

References

https://hackerone.com/reports/3543011
technical-descriptionexploitpermissions-required
https://gitlab.com/gitlab-org/gitlab/-/work_items/589186
https://docs.gitlab.com/releases/patches/patch-release-gi...

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

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