CVE-2021-34620

Name: CVE-2021-34620
Creator: NVD / NIST
Published: 2021-07-07T13:15:08.463+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 2.63%

Last modified Jun 17, 2026

CVE-2021-34620 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. The WP Fluent Forms plugin < 3.6.67 for WordPress is vulnerable to Cross-Site Request Forgery leading to stored Cross-Site Scripting and limited Privilege Escalation due to a missing nonce check in the access control function for administrative AJAX actions. EPSS estimates a 2.63% chance of exploitation in the next 30 days.

Description

The WP Fluent Forms plugin < 3.6.67 for WordPress is vulnerable to Cross-Site Request Forgery leading to stored Cross-Site Scripting and limited Privilege Escalation due to a missing nonce check in the access control function for administrative AJAX actions

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

2.63%

83.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Fluentforms	Contact Form	< 3.6.67

References

https://plugins.trac.wordpress.org/browser/fluentform/trunk/app/Modules/Acl/Acl.php?rev=2196688Exploit, Vendor Advisory
https://www.wordfence.com/blog/2021/06/cross-site-request-forgery-patched-in-wp-fluent-forms/Exploit, Third Party Advisory
https://plugins.trac.wordpress.org/browser/fluentform/trunk/app/Modules/Acl/Acl.php?rev=2196688Exploit, Vendor Advisory
https://www.wordfence.com/blog/2021/06/cross-site-request-forgery-patched-in-wp-fluent-forms/Exploit, Third Party Advisory

Timeline

Published: Jul 7, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-34620?

How severe is CVE-2021-34620?

CVE-2021-34620 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 2.63% probability of exploitation in the next 30 days.

How do I fix CVE-2021-34620?

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-2021-34620?

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

Scan your code now

Source: NVD / NIST