Authorization Bypass in GitLab CE/EE Affecting Developer Role Users
CVE-2026-5952

4.3MEDIUM

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
25 June 2026

What is CVE-2026-5952?

GitLab has addressed an authorization bypass vulnerability in GitLab CE/EE versions prior to 18.11.6, 19.0.3, and 19.1.1. This issue arises when an authenticated user with developer role permissions is able to bypass established package protection rules. The flaw is due to incorrect authorization checks, which could allow such users to overwrite protected Maven package metadata, potentially compromising the integrity of software packages managed within GitLab.

Affected Version(s)

GitLab 17.11 < 18.11.6

GitLab 19.0 < 19.0.3

GitLab 19.1 < 19.1.1

References

https://gitlab.com/gitlab-org/gitlab/-/work_items/596134
https://hackerone.com/reports/3632428
technical-descriptionexploitpermissions-required
https://docs.gitlab.com/releases/patches/patch-release-gi...

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

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