Improper Authorization in GitLab CE/EE Affecting User Permissions
CVE-2026-16301

8.5HIGH

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
13 October 2026

What is CVE-2026-16301?

GitLab has addressed a security vulnerability that affects authenticated users with Developer roles in GitLab CE/EE across several versions. This issue arises from insufficient authorization controls within the downstream pipeline creation service, which may allow such users to execute CI/CD pipelines on protected branches without the necessary permissions. Users are encouraged to update their installations to the latest versions to mitigate this risk.

Affected Version(s)

GitLab 18.7 < 19.2.8

GitLab 19.3 < 19.3.5

GitLab 19.4 < 19.4.2

References

https://gitlab.com/gitlab-org/gitlab/-/work_items/606501
https://hackerone.com/reports/3853866
technical-descriptionexploitpermissions-required
https://docs.gitlab.com/releases/patches/patch-release-gi...

CVSS V3.1

Score:
8.5
Severity:
HIGH
Confidentiality:
Low
Integrity:
High
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Thanks [sim4n6](https://hackerone.com/sim4n6) for reporting this vulnerability through our HackerOne bug bounty program
.