What is CVE-2026-4225?

CVE-2026-4225 is a low-severity vulnerability in Cms Made Simple, classified under Cross-site Scripting. CVSS score: 2.4/10. Published 2026-03-16.

How severe is CVE-2026-4225?

Low severity. CVSS v3 base score is 2.4 out of 10.

RCE in Cms Made Simple

CVE-2026-4225

A security flaw has been discovered in CMS Made Simple up to 2.2.21. Impacted is an unknown function of the file admin/listusers.php of the component User Management Module. Performing a manipulation of the argument Message results in cros…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (11.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 2.4 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N.

Affected products

N/a Cms Made Simple — versions 2.2.0, 2.2.1, 2.2.2

Weakness classification (CWE)

References

VDB-351148 | CMS Made Simple User Management listusers.php cross site scripting (technical-description, vdb-entry)
VDB-351148 | CTI Indicators (IOB, IOC, TTP, IOA) (signature, permissions-required)
Submit #770530 | cms made simple 2.2.21 XSS (third-party-advisory)
cna@vuldb.com (exploit)

Frequently asked questions

What is CVE-2026-4225?: CVE-2026-4225 is a low-severity vulnerability in Cms Made Simple, classified under Cross-site Scripting. CVSS score: 2.4/10. Published 2026-03-16.
How severe is CVE-2026-4225?: Low severity. CVSS v3 base score is 2.4 out of 10.