What is CVE-2021-24381?

CVE-2021-24381 is a medium-severity vulnerability in Ninjaforms Contact Form, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2021-10-25.

How severe is CVE-2021-24381?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Is CVE-2021-24381 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Ninjaforms Contact Form

CVE-2021-24381

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.006 (45.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

Affected products

Ninjaforms Contact_form
Unknown Ninja Forms Contact Form – The Drag And Drop Builder For Wordpress — versions 3.5.8.2

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

20142995/nuclei-templates

References

contact@wpscan.com (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-24381?: CVE-2021-24381 is a medium-severity vulnerability in Ninjaforms Contact Form, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2021-10-25.
How severe is CVE-2021-24381?: Medium severity. CVSS v3 base score is 4.8 out of 10.
Is CVE-2021-24381 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.