CVE-2021-24870

Name: CVE-2021-24870
Creator: NVD / NIST
Published: 2024-01-16T16:15:09.153+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.25%

Last modified Jun 17, 2026

CVE-2021-24870 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. The WP Fastest Cache WordPress plugin before 0.9.5 is lacking a CSRF check in its wpfc_save_cdn_integration AJAX action, and does not sanitise and escape some the options available via the action, which could allow attackers to make logged in high privilege users call it and set a Cross-Site Scripting payload. EPSS estimates a 0.25% chance of exploitation in the next 30 days.

Description

The WP Fastest Cache WordPress plugin before 0.9.5 is lacking a CSRF check in its wpfc_save_cdn_integration AJAX action, and does not sanitise and escape some the options available via the action, which could allow attackers to make logged in high privilege users call it and set a Cross-Site Scripting payload

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

0.25%

16.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-352

Affected Software

Vendor	Product	Versions
Wpfastestcache	Wp Fastest Cache	< 0.9.5

References

https://jetpack.com/2021/10/14/multiple-vulnerabilities-in-wp-fastest-cache-plugin/Exploit, Third Party Advisory
https://wpscan.com/vulnerability/48de63ab-2ef1-4469-8fc4-9346068bdf06/Third Party Advisory
https://jetpack.com/2021/10/14/multiple-vulnerabilities-in-wp-fastest-cache-plugin/Exploit, Third Party Advisory
https://wpscan.com/vulnerability/48de63ab-2ef1-4469-8fc4-9346068bdf06/Third Party Advisory

Timeline

Published: Jan 16, 2024
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-24870?

How severe is CVE-2021-24870?

CVE-2021-24870 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.25% probability of exploitation in the next 30 days.

How do I fix CVE-2021-24870?

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-2021-24870?

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

Scan your code now

Source: NVD / NIST