CVE-2021-47919

5.1 mediumEPSS 0.3%

Medium (5.1) in simplephpscripts simple cms php. EPSS 0.3% chance of exploitation in the next 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.

Severity

CVSS 4.0

5.1 medium

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

CVSS 3.1

5.4 medium

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 25% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2026-02-01
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

simplephpscripts:simple_cms_php

References

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

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