CVE-2021-47917

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 persistent cross-site scripting vulnerability in user input parameters that allows remote attackers to inject malicious script code. Attackers can exploit the newUser and editUser modules to inject persistent scripts that execute on user list preview, potentially leading to session hijacking and application manipulation.

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 26% 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-persistent-cross-site-scripting-via-user-input-parameters
https://www.vulnerability-lab.com/get_content.php?id=2302

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