CVE-2026-107321: Unknown w3 Total Cache

Medium severity, CVSS 5.4. EPSS: 0.2% chance of exploitation in the next 30 days.

The W3 Total Cache WordPress plugin before 2.10.6 does not confine a media-import file copy to the document root, nor enforce an effective file-type restriction on it, allowing users with the Author role or higher to plant content that, once an administrator runs the import, copies an arbitrary server-readable file into a publicly served directory, exposing it to unauthenticated retrieval.

Affected products

• Unknown w3 Total Cache: before 2.10.6 (fixed in 2.10.6)

Published 2026-10-10. Last modified 2026-10-10.