critical10.0
CVE-2026-18051
The W3 Total Cache WordPress plugin before 2.10.5 does not properly validate the request path it uses to build cache file names, allowing unauthenticated attac…
Impact
The W3 Total Cache WordPress plugin before 2.10.5 does not properly validate the request path it uses to build cache file names, allowing unauthenticated attackers to write a file into any existing directory on the server, inside or outside the web root, overwriting whatever occupies the target name. On Apache, the same flaw overwrites the site's .htaccess files, which breaks the site and can strip hardening rules that other security measures rely on.
Affected products
| Product | Affected versions |
|---|---|
| W3 Total Cache WordPress Plugin | before 2.10.5 |
Versions were read from the advisory text. No structured product data has been published for this record yet.