CVE-2026-6552

high

Description

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.

References

https://hackerone.com/reports/3655189

https://gitlab.com/gitlab-org/gitlab/-/work_items/597295

https://about.gitlab.com/releases/2026/06/10/patch-release-gitlab-19-0-2-released/

Details

Source: Mitre, NVD

Published: 2026-06-11

Updated: 2026-06-11

Risk Information

CVSS v2

Base Score: 7.7

Vector: CVSS2#AV:N/AC:L/Au:M/C:C/I:C/A:N

Severity: High

CVSS v3

Base Score: 8.7

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

Severity: High

EPSS

EPSS: 0.0001