CVE-2021-24224

Name: CVE-2021-24224
Creator: NVD / NIST
Published: 2021-04-12T14:15:15.773+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.91%

Last modified Jun 17, 2026

CVE-2021-24224 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. The EFBP_verify_upload_file AJAX action of the Easy Form Builder WordPress plugin through 1.0, available to authenticated users, does not have any security in place to verify uploaded files, allowing low privilege users to upload arbitrary files, leading to RCE.. EPSS estimates a 1.91% chance of exploitation in the next 30 days.

Description

The EFBP_verify_upload_file AJAX action of the Easy Form Builder WordPress plugin through 1.0, available to authenticated users, does not have any security in place to verify uploaded files, allowing low privilege users to upload arbitrary files, leading to RCE.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

1.91%

77.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-434

Affected Software

Vendor	Product	Versions
Easy-Form-Builder-By-Bitware Project	Easy-Form-Builder-By-Bitware	<= 1.0

References

https://github.com/jinhuang1102/CVE-ID-Reports/blob/e4c33529b20fa70e3a764ff9b1125839fb9900b5/Easy%20Form%20Builder.mdExploit, Third Party Advisory
https://wpscan.com/vulnerability/ed0c054b-54bf-4df8-9015-c76704c93484Third Party Advisory
https://github.com/jinhuang1102/CVE-ID-Reports/blob/e4c33529b20fa70e3a764ff9b1125839fb9900b5/Easy%20Form%20Builder.mdExploit, Third Party Advisory
https://wpscan.com/vulnerability/ed0c054b-54bf-4df8-9015-c76704c93484Third Party Advisory

Timeline

Published: Apr 12, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-24224?

How severe is CVE-2021-24224?

CVE-2021-24224 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.91% probability of exploitation in the next 30 days.

How do I fix CVE-2021-24224?

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-2021-24224?

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

Scan your code now

Source: NVD / NIST