VULNERABILITY INTELLIGENCE

CVE-2021-47733

CVSS score6.1 MEDIUM
EPSS probability0.26%
CISA KEVNot currently listed
Published2025-12-23
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Description

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.

Weakness classification

  • disclosure@vulncheck.com: CWE-79

Primary references