PT-2026-48629 · Gitlab · Gitlab Ce/Ee+1

CVE-2026-6552 · Published 2026-06-11 · Updated 2026-06-16

Positive Technologies (AI Summary)

CVSS v3.1

8.7

High

Base vector

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

Name of the Vulnerable Software and Affected Versions GitLab EE versions 15.5 through 18.10.7 GitLab EE versions 18.11 through 18.11.4 GitLab EE versions 19.0 through 19.0.1

Description Improper authorization in the Group SAML identity management functionality allows an authenticated user with the group Owner role to take over the account of another group member under certain conditions.

Recommendations Update to version 18.10.8 Update to version 18.11.5 Update to version 19.0.2

Exploit

Fix

DoS

IDOR

Weakness Enumeration

CWE-639

Related Identifiers

BIT-GITLAB-2026-6552

CVE-2026-6552

Affected Products

Gitlab

Gitlab Ce/Ee

References · 16

• 🔥 https://hackerone.com/reports/3655189 · Exploit
• https://cve.org/CVERecord?id=CVE-2026-6552 · Security Note
• https://osv.dev/vulnerability/BIT-gitlab-2026-6552 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-6552 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-6552 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-6552 · Security Note
• https://twitter.com/threatcluster/status/2066725098455752801 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2065099446203953298 · Twitter Post
• https://twitter.com/CCBalert/status/2066431815800271205 · Twitter Post
• https://i.redd.it/u748llicnl6h1.png · Reddit Post
• https://twitter.com/the_yellow_fall/status/2064896879432020334 · Twitter Post
• https://gitlab.com/gitlab-org/gitlab/-/work_items/597295 · Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-6552 · Note
• https://about.gitlab.com/releases/2026/06/10/patch-release-gitlab-19-0-2-released · Note
• https://t.me/CVEtracker/56576 · Telegram Post