HIGHVulnerability
Verified
Global

NVD HIGH: CVE-2026-8350 — Concrete CMS 9.5.0 and below is vulnerable to missing authorization in the bulk_...

·Source: NIST NVD

Updated:

Executive Summary

Concrete CMS 9.5.0 and below is vulnerable to missing authorization in the bulk_user_assignment.php which can lead to privilege escalation to Administrative Group. Any authenticated user with access to the bulk user assignment dashboard page can add any user email to any group and can remove legitimate admins. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 7.5 with ve

Analysis

Concrete CMS 9.5.0 and below is vulnerable to missing authorization in the bulk_user_assignment.php which can lead to privilege escalation to Administrative Group. Any authenticated user with access to the bulk user assignment dashboard page can add any user email to any group and can remove legitimate admins. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 7.5 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N. Thanks Vincent55 for reporting. CVSS Score: 8.8. Published: 2026-05-21T21:16:33.773.

Indicators of Compromise (1)

CVE (1)
CVE-2026-8350
NVDMITRE CVE
Source Attribution

Originally published by NIST NVD on May 21, 2026. Verified by: NIST.

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