Authorization Flaw in GitLab EE from GitLab Inc.
CVE-2026-2900

2.7LOW

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
14 May 2026

What is CVE-2026-2900?

GitLab EE has disclosed a security vulnerability that allows an authenticated user with Maintainer permissions to potentially alter or remove project approval rules. This issue arises when instance-level approval rule editing prevention is enabled but lacks proper authorization checks, permitting unauthorized modifications. The affected versions include all releases from 16.10 prior to 18.9.7, 18.10 prior to 18.10.6, and 18.11 prior to 18.11.3, necessitating prompt updates to mitigate risks associated with unauthorized access.

Affected Version(s)

GitLab 16.10 < 18.9.7

GitLab 18.10 < 18.10.6

GitLab 18.11 < 18.11.3

References

https://hackerone.com/reports/3561092
technical-descriptionexploitpermissions-required
https://gitlab.com/gitlab-org/gitlab/-/work_items/590983
https://about.gitlab.com/releases/2026/05/13/patch-releas...

CVSS V3.1

Score:
2.7
Severity:
LOW
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
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
.