Access Control Flaw in GitLab CE/EE
CVE-2026-3074

4.3MEDIUM

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
14 May 2026

What is CVE-2026-3074?

An improper access control vulnerability in GitLab CE/EE allows unauthenticated users to download private debugging symbols from restricted projects. Affected versions include 16.7 and above, prior to 18.9.7, as well as versions 18.10 before 18.10.6 and 18.11 before 18.11.3. This flaw highlights the critical importance of robust access control mechanisms to prevent unauthorized data exposure.

Affected Version(s)

GitLab 16.7 < 18.9.7

GitLab 18.10 < 18.10.6

GitLab 18.11 < 18.11.3

References

https://hackerone.com/reports/3556163
technical-descriptionexploitpermissions-required
https://gitlab.com/gitlab-org/gitlab/-/work_items/591229
https://about.gitlab.com/releases/2026/05/13/patch-releas...

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