CVE-2021-24452

Name: CVE-2021-24452
Creator: NVD / NIST
Published: 2021-07-19T11:15:08.627+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 2.00%

Last modified Jun 17, 2026

CVE-2021-24452 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. The W3 Total Cache WordPress plugin before 2.1.5 was affected by a reflected Cross-Site Scripting (XSS) issue within the "extension" parameter in the Extensions dashboard, when the 'Anonymously track usage to improve product quality' setting is enabled, as the parameter is output in a JavaScript context without proper escaping. This could allow an attacker, who can convince an authenticated admin into clicking a link, to run malicious JavaScript within the user's web browser, which could lead to full site compromise.. EPSS estimates a 2.00% chance of exploitation in the next 30 days.

Description

The W3 Total Cache WordPress plugin before 2.1.5 was affected by a reflected Cross-Site Scripting (XSS) issue within the "extension" parameter in the Extensions dashboard, when the 'Anonymously track usage to improve product quality' setting is enabled, as the parameter is output in a JavaScript context without proper escaping. This could allow an attacker, who can convince an authenticated admin into clicking a link, to run malicious JavaScript within the user's web browser, which could lead to full site compromise.

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

2.00%

78.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Boldgrid	W3 Total Cache	< 2.1.5

References

https://wpscan.com/vulnerability/3e855e09-056f-45b5-89a9-d644b7d8c9d0Exploit, Third Party Advisory
https://wpscan.com/vulnerability/3e855e09-056f-45b5-89a9-d644b7d8c9d0Exploit, Third Party Advisory

Timeline

Published: Jul 19, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-24452?

How severe is CVE-2021-24452?

CVE-2021-24452 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 2.00% probability of exploitation in the next 30 days.

How do I fix CVE-2021-24452?

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-2021-24452?

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

Scan your code now

Source: NVD / NIST