CVE-2021-24436

W3 Total Cache < 2.1.4 - Reflected XSS in Extensions Page (Attribute Context)

MEDIUM
6.1
CVSS Score
Published: July 19, 2021 at 10:53 AM UTC
Updated: June 17, 2026 at 03:40 AM UTC
1 product affected across 1 vendorW3 Total Cache

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Severity
MEDIUM6.1
Exploit prediction
EPSS 2%

Description

The W3 Total Cache WordPress plugin before 2.1.4 was vulnerable to a reflected Cross-Site Scripting (XSS) security vulnerability within the "extension" parameter in the Extensions dashboard, which is output in an attribute without being escaped first. 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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

95%
v < 2.1.4
Affected range stops below 2.1.4, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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