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4.8

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-Si...

CVE-2021-24381 · published 5 years ago
Summary

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.

What to do
  • Update ninjaforms contact_form to version 3.5.8.2 or later.
Affected software
VendorProductAffected versions
ninjaforms contact_form < 3.5.8.2
cpe:2.3:a:ninjaforms:contact_form:*:*:*:*:*:wordpress:*:*
Original advisory text
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-Si...
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.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker partial control (estimated)
Severity
4.8 Medium
Exploitation
<1% chance of attack within 30 days
Type
CWE-79Cross-site Scripting (XSS)
Timeline
Published25 Oct 2021
Updated4 Nov 2026
First seen29 Sep 2026
Sources
CVE-2021-24381 · NVD
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