CVE-2021-47733
NoneCVSS
—
EPSS
0.3%
Published
Dec 23, 2025
CISA due date
—
The record
CMSimple 5.4 contains a cross-site scripting vulnerability that allows attackers to bypass input filtering by using HTML to Unicode encoding. Attackers can inject malicious scripts by encoding payloads like ')-alert(1)// and execute arbitrary JavaScript when victims interact with delete buttons.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|