CVE-2021-47732

CMSimple 5.2 contains a stored cross-site scripting vulnerability in the Filebrowser External input field that allows attackers to inject malicious JavaScript. Attackers can place unfiltered JavaScript code that executes when users click on Page or Files tabs, enabling persistent script injection.

CVSS v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://www.cmsimple.org/en/	Product
https://www.exploit-db.com/exploits/49751	Exploit
https://www.vulncheck.com/advisories/cmsimple-stored-cross-site-scripting-via-filebrowser-external-input	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:cmsimple:cmsimple:5.2:*:*:*:*:*:*:*

History

05 Jan 2026, 14:15

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~7.2~~	v2 : unknown v3 : 6.1

31 Dec 2025, 21:43

Type	Values Removed	Values Added
First Time		Cmsimple Cmsimple cmsimple
CPE		cpe:2.3:a:cmsimple:cmsimple:5.2:::::::*
References	~~() https://www.cmsimple.org/en/ -~~	() https://www.cmsimple.org/en/ - Product
References	~~() https://www.exploit-db.com/exploits/49751 -~~	() https://www.exploit-db.com/exploits/49751 - Exploit
References	~~() https://www.vulncheck.com/advisories/cmsimple-stored-cross-site-scripting-via-filebrowser-external-input -~~	() https://www.vulncheck.com/advisories/cmsimple-stored-cross-site-scripting-via-filebrowser-external-input - Third Party Advisory

23 Dec 2025, 20:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-12-23 20:15

Updated : 2026-01-05 14:15

NVD link : CVE-2021-47732

Mitre link : CVE-2021-47732

CVE.ORG link : CVE-2021-47732

JSON object : View

Products Affected

cmsimple

cmsimple

CWE

CWE-79

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

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