CVE-2021-24381

PoC —

CVSS 3.1

4.8 medium

EPSS

<1%p48

Published

Oct 25, 2021 (Oct 25, 2021)

Modified

Jun 17, 2026

Description

The Ninja Forms Contact Form WordPress plugin before 3.5.8.2 does not sanitise and escape the custom class name of the form field created, which could allow high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed.

Vendors: ninjaforms
Products: contact form
Ecosystems: WordPress
Weakness: CWE-79
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (0.6%)

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