CVE WatchAug 14, 2026

CVE-2026-18109

The W3 Total Cache plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Author Name in all versions up to, and incl

CVSS

7.2

High

EPSS

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KEV

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Exploit Today

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0-100

Published: Aug 14, 2026 · Last modified: Aug 14, 2026 · CWE-79

EPSS · 30d

Not enough EPSS history yet.

Technical description

The W3 Total Cache plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Author Name in all versions up to, and including, 2.10.3 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This vulnerability is only exploitable when the Lazy Load Images feature of W3 Total Cache is enabled, as the unsafe re-emission occurs exclusively within the LazyLoad mutator's img tag rewriting step.

Official references

Related CVEs

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