🔐 CVE Alert

CVE-2026-6552

HIGH 8.7

Authorization Bypass Through User-Controlled Key in GitLab

CVSS Score
8.7
EPSS Score
0.0%
EPSS Percentile
0th

GitLab has remediated an issue in GitLab EE affecting all versions from 15.5 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2 that under certain conditions could have allowed an authenticated user with group Owner role to take over another group member's GitLab account due to improper authorization in the Group SAML identity management functionality.

CWE CWE-639
Vendor gitlab
Product gitlab
Ecosystems
Industries
Technology
Published Jun 11, 2026
Last Updated Jun 11, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None

Affected Versions

GitLab / GitLab
15.5 < 18.10.8 18.11 < 18.11.5 19.0 < 19.0.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗
gitlab.com: https://gitlab.com/gitlab-org/gitlab/-/work_items/597295 hackerone.com: https://hackerone.com/reports/3655189 about.gitlab.com: https://about.gitlab.com/releases/2026/06/10/patch-release-gitlab-19-0-2-released/

Credits

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