CVE-2026-6552 HIGH

CVE-2026-6552: Authorization Bypass Through User-Controlled Key in GitLab

Vendor Gitlab
Product GitLab
Weakness CWE-639 · IDOR
Published June 11, 2026
Last update June 12, 2026
View on NVD All CVEs

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

June 11, 2026 CVE published
June 12, 2026 Record updated