CVE

CVE-2021-24436

6.1

CVSS

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.

Attack Vector

Privileges Req.

User Interaction

w3 total cache

Updated Sep 26, 2026View on NVD →

S4E scanner

mediumProduct Based Web Vulnerabilities~10 seconds

CVE-2021-24436 Scanner

Detects 'Cross-Site Scripting (XSS)' vulnerability in W3 Total Cache plugin for WordPress affects v. before 2.1.4.

Used 3.4k times · 3.5k assets checked · domain, ipv4, subdomain

Scanner page →Run scanner

CVE history: w3 total cache

Predict next CVE date with AI

Monitor this CVE on your assets

S4E maps published CVEs to scanners and forecasts the next disclosure window for your stack.

Create a free account →