CVE-2021-24565

Name: CVE-2021-24565
Creator: NVD / NIST
Published: 2021-08-23T12:15:10.303+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.72%

Last modified Jun 17, 2026

CVE-2021-24565 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. The Contact Form 7 Captcha WordPress plugin before 0.0.9 does not have any CSRF check in place when saving its settings, allowing attacker to make a logged in user with the manage_options change them. Furthermore, the settings are not escaped when output in attributes, leading to a Stored Cross-Site Scripting issue.. EPSS estimates a 0.72% chance of exploitation in the next 30 days.

Description

The Contact Form 7 Captcha WordPress plugin before 0.0.9 does not have any CSRF check in place when saving its settings, allowing attacker to make a logged in user with the manage_options change them. Furthermore, the settings are not escaped when output in attributes, leading to a Stored Cross-Site Scripting issue.

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

0.72%

49.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Contact Form 7 Captcha Project	Contact Form 7 Captcha	< 0.0.9

References

https://plugins.trac.wordpress.org/changeset/2570402Patch, Third Party Advisory
https://wpscan.com/vulnerability/97bfef5e-2ee0-491a-a931-4f44c83e5be0Exploit, Third Party Advisory
https://plugins.trac.wordpress.org/changeset/2570402Patch, Third Party Advisory
https://wpscan.com/vulnerability/97bfef5e-2ee0-491a-a931-4f44c83e5be0Exploit, Third Party Advisory

Timeline

Published: Aug 23, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-24565?

How severe is CVE-2021-24565?

CVE-2021-24565 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.72% probability of exploitation in the next 30 days.

How do I fix CVE-2021-24565?

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-2021-24565?

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

Scan your code now

Source: NVD / NIST