CVE-2021-47917

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.

CVSS v3 6.4 MEDIUM

6.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.1 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://simplephpscripts.com/simple-cms-php	Product
https://www.vulncheck.com/advisories/simple-cms-persistent-cross-site-scripting-via-user-input-parameters	Third Party Advisory
https://www.vulnerability-lab.com/get_content.php?id=2302	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:simplephpscripts:simple_cms_php:2.1:*:*:*:*:*:*:*

History

11 Feb 2026, 19:30

Type	Values Removed	Values Added
First Time		Simplephpscripts simple Cms Php Simplephpscripts
References	~~() https://simplephpscripts.com/simple-cms-php -~~	() https://simplephpscripts.com/simple-cms-php - Product
References	~~() https://www.vulncheck.com/advisories/simple-cms-persistent-cross-site-scripting-via-user-input-parameters -~~	() https://www.vulncheck.com/advisories/simple-cms-persistent-cross-site-scripting-via-user-input-parameters - Third Party Advisory
References	~~() https://www.vulnerability-lab.com/get_content.php?id=2302 -~~	() https://www.vulnerability-lab.com/get_content.php?id=2302 - Exploit, Third Party Advisory
CPE		cpe:2.3:a:simplephpscripts:simple_cms_php:2.1:::::::*

01 Feb 2026, 13:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-02-01 13:15

Updated : 2026-02-11 19:30

NVD link : CVE-2021-47917

Mitre link : CVE-2021-47917

CVE.ORG link : CVE-2021-47917

JSON object : View

Products Affected

simplephpscripts

simple_cms_php

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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