CVE-2021-24427

W3 Total Cache < 2.1.3 - Authenticated Stored XSS

Severity Score

4.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The W3 Total Cache WordPress plugin before 2.1.3 did not sanitise or escape some of its CDN settings, allowing high privilege users to use JavaScript in them, which will be output in the page, leading to an authenticated Stored Cross-Site Scripting issue

El plugin de WordPress W3 Total Cache versiones anteriores a 2.1.3, no saneaba o escapaba de algunas de sus configuraciones de CDN, permitiendo a usuarios con altos privilegios usar JavaScript en ellas, que se emitirá en la página, conllevando a un problema de tipo Cross-Site Scripting Almacenado autentificado

The W3 Total Cache plugin for WordPress is vulnerable to Stored Cross-Site Scripting via several CDN settings in versions up to, and including, 2.1.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers with administrative level permissions and above to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

*Credits: m0ze

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

Single

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-01-14 CVE Reserved
2021-06-16 CVE Published
2024-08-03 CVE Updated
2024-08-03 First Exploit
2024-12-17 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CAPEC

References (2)

URL	Tag	Source
https://m0ze.ru/vulnerability/%5B2021-04-25%5D-%5BWordPress%5D-%5BCWE-79%5D-W3-Total-Cache-WordPress-Plugin-v2.1.2.txt	X_refsource_misc

URL	Date	SRC
https://wpscan.com/vulnerability/5da5ce9a-82a6-404f-8dec-795d7905b3f9	2024-08-03

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Boldgrid Search vendor "Boldgrid"		W3 Total Cache Search vendor "Boldgrid" for product "W3 Total Cache"				< 2.1.3 Search vendor "Boldgrid" for product "W3 Total Cache" and version " < 2.1.3"		wordpress		Affected