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Vulnerability record · CVE-2021-47919 · published 1 February 2026

CVE-2021-47919: Simplephpscripts simple cms php cross-site scripting vulnerability

Simplephpscripts · Simple Cms Php

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.

5.1 CVSS 4.0 Medium EPSS 0.31% · top 79.0% CWE-79 · Cross-site scripting
5.1CVSS 4.0 base score
0.31%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

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:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://simplephpscripts.com/simple-cms-php Product
https://www.vulncheck.com/advisories/simple-cms-non-persistent-cross-site-scripting-via-preview-parameter Third Party Advisory
https://www.vulnerability-lab.com/get_content.php?id=2301 ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-47919), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.