Authorization Flaw in GitLab CE/EE Allows Access to Private Issue Data
CVE-2026-8937

4.3MEDIUM

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
29 September 2026

What is CVE-2026-8937?

GitLab has addressed a critical issue in its CE/EE versions where an authenticated user could potentially access private contents of child issues, such as titles and descriptions, from projects outside their authorized access. This vulnerability arose from a lack of necessary authorization checks on linked work items within visible epics. Users should ensure their installation is updated to the latest versions to mitigate this risk.

Affected Version(s)

GitLab 19.0 < 19.2.7

GitLab 19.3 < 19.3.3

GitLab 19.4 < 19.4.1

References

https://gitlab.com/gitlab-org/gitlab/-/work_items/600533
https://hackerone.com/reports/3702369
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
.