CVE-2025-9501: Identifying High-Risk WordPress Instances Using W3 Total Cache
CVE-2025-9501 is a critical remote code-execution vulnerability affecting W3 Total Cache versions prior to 2.8.13, a plugin used by more than a million WordPress sites to improve performance and caching. The issue lies in the plugin’s _parse_dynamic_mfunc handler, which can process user-controlled inputs inside dynamic fragments.