Medium 5.4Published Feb 1, 2026

CVE-2021-47919Simple CMS 2.1 contains a non-persistent cross-site scripting vulnerability in the preview.php file's id parameter.

Updated under an hour ago (2026-10-19 08:23 UTC)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for simplephpscripts simple_cms_php

Exploited in the last 30 days

Simple CMS 2.1 contains a non-persistent cross-site scripting vulnerability in the preview.php file's id parameter. Attackers can inject malicious script code through a GET request to execute arbitrary scripts and potentially hijack user sessions or perform phishing attacks.

CVSS: 5.4 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Analyzed
Record last updated: Jun 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

simplephpscripts simple_cms_php simplephpscripts:simple_cms_php	2.1	NVD

References

https://simplephpscripts.com/simple-cms-phpproduct
https://www.vulncheck.com/advisories/simple-cms-non-persistent-cross-site-scripting-via-preview-parameterthird-party-advisory
https://www.vulnerability-lab.com/get_content.php?id=2301exploit, third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.