CVE-2021-24452: vulnerability in BoldGrid W3 Total Cache
W3 Total Cache < 2.1.5 - Reflected XSS in Extensions Page (JS Context)
Published · Updated
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18Vexday Risk Score
Patch soon. It has a working public exploit.
ssvc Attendepss 1.9%
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.
Affected products
BoldGrid · W3 Total CacheRelated CVEs — BoldGrid W3 Total Cache
In the same product, most dangerous first.
CVE-2021-24436—W3 Total Cache < 2.1.4 - Reflected XSS in Extensions Page (Attribute Context)EPSS 1.8%CVE-2021-24427—W3 Total Cache < 2.1.3 - Authenticated Stored XSSEPSS 0.6%CVE-2026-57623CRITICALWordPress W3 Total Cache plugin <= 2.9.4 - Arbitrary Code Execution vulnerabilityEPSS 0.5%CVE-2026-66695MEDIUMWordPress W3 Total Cache plugin <= 2.10.2 - Path Traversal vulnerabilityEPSS 0.4%CVE-2026-27384CRITICALWordPress W3 Total Cache plugin <= 2.9.1 - Arbitrary Code Execution vulnerabilityEPSS 0.4%CVE-2026-39595MEDIUMWordPress W3 Total Cache plugin <= 2.9.1 - Broken Access Control vulnerabilityEPSS 0.2%