CVE-2026-74916: Unknown Wp Fastest Cache

Medium severity, CVSS 6.5. EPSS: 0.2% chance of exploitation in the next 30 days.

The WP Fastest Cache WordPress plugin before 1.5.1 does not include a set of tracking-related query parameters in its page-cache key while still caching pages requested with them, allowing unauthenticated attackers to have a page rendered under their own request context stored under, and served from, the clean URL's cache entry to every subsequent visitor.

Affected products

• Unknown Wp Fastest Cache: from 0.8.7.7, before 1.5.1 (fixed in 1.5.1)

Published 2026-09-01. Last modified 2026-09-01.