Is CVE-2026-8350 actively exploited?

No active exploitation of CVE-2026-8350 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-8350 be exploited remotely?

Yes. CVE-2026-8350 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-8350?

CVE-2026-8350 has a CVSS score of 8.8 (HIGH).

HOME VULNERABILITIESCVE-2026-8350

HIGH

CVE-2026-8350

CWE-863Published: May 21, 2026· Updated: May 26, 2026

8.8

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:10.7th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-8350 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.