The WP Fastest Cache plugin 0.8.8.5 for WordPress has XSS via the wpfastestcacheoptions wpFastestCachePreload_number or wpFastestCacheLanguage parameter.
Severity
CVSS 3.0
6.1 medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS
1.4% chance of exploitation in the next 30 days; higher than 71% of CVEs (scores of 2026-10-31)