CVE-2026-6552

Authorization Bypass Through User-Controlled Key in GitLab

CVSS 8.7 HIGHEPSS 0.3%CWE-639

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.

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

Productos afectados

GitLab · GitLab

PoCs públicas encontradas — 1

cve_referencehackerone.com/reports/3655189no verificado

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Referencias

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