CVE-2021-47732 - CVE House
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Status published Medium CVE-2021-47732

CMSimple 5.2 Stored Cross-Site Scripting via Filebrowser External Input

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Quadron Research Lab

Affected Vendor

Affected Software

CMSimple
Vulnerable Versions:
CMSimple 5.2

Timeline

Official Publish: December 23rd, 2025
Last Modified: April 7th, 2026
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weaknesses (CWE)