CVE-2021-24166

Name: CVE-2021-24166
Creator: NVD / NIST
Published: 2021-04-05T19:15:15.513+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.46%

Last modified Jun 17, 2026

CVE-2021-24166 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. The wp_ajax_nf_oauth_disconnect from the Ninja Forms Contact Form – The Drag and Drop Form Builder for WordPress WordPress plugin before 3.4.34 had no nonce protection making it possible for attackers to craft a request to disconnect a site's OAuth connection.. EPSS estimates a 0.46% chance of exploitation in the next 30 days.

Description

The wp_ajax_nf_oauth_disconnect from the Ninja Forms Contact Form – The Drag and Drop Form Builder for WordPress WordPress plugin before 3.4.34 had no nonce protection making it possible for attackers to craft a request to disconnect a site's OAuth connection.

Metrics

CVSS 3.1

5.4/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L

EPSS Probability

0.46%

36.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Ninjaforms	Ninja Forms	< 3.4.34

References

https://wpscan.com/vulnerability/b531fb65-a8ff-4150-a9a1-2a62a3c00bd6Exploit, Third Party Advisory
https://www.wordfence.com/blog/2021/02/one-million-sites-affected-four-severe-vulnerabilities-patched-in-ninja-forms/Third Party Advisory
https://wpscan.com/vulnerability/b531fb65-a8ff-4150-a9a1-2a62a3c00bd6Exploit, Third Party Advisory
https://www.wordfence.com/blog/2021/02/one-million-sites-affected-four-severe-vulnerabilities-patched-in-ninja-forms/Third Party Advisory

Timeline

Published: Apr 5, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-24166?

How severe is CVE-2021-24166?

CVE-2021-24166 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.46% probability of exploitation in the next 30 days.

How do I fix CVE-2021-24166?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-24166?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST