CVE-2021-24165

Name: CVE-2021-24165
Creator: NVD / NIST
Published: 2021-04-05T19:15:15.437+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 1.64%

Last modified Jun 17, 2026

CVE-2021-24165 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. In the Ninja Forms Contact Form WordPress plugin before 3.4.34, the wp_ajax_nf_oauth_connect AJAX action was vulnerable to open redirect due to the use of a user supplied redirect parameter and no protection in place.. EPSS estimates a 1.64% chance of exploitation in the next 30 days.

Description

In the Ninja Forms Contact Form WordPress plugin before 3.4.34, the wp_ajax_nf_oauth_connect AJAX action was vulnerable to open redirect due to the use of a user supplied redirect parameter and no protection in place.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

1.64%

73.4th 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/6147acf5-e43f-47e6-ab56-c9c8be584818Exploit, 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/6147acf5-e43f-47e6-ab56-c9c8be584818Exploit, 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-2021-24165?

How severe is CVE-2021-24165?

CVE-2021-24165 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 1.64% probability of exploitation in the next 30 days.

How do I fix CVE-2021-24165?

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-2021-24165?

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

Scan your code now

Source: NVD / NIST