CVE-2026-8616: Devozon Fense Proxy & VPN Blocker

Medium severity, CVSS 5.3. EPSS: 0.4% chance of exploitation in the next 30 days.

The Fense Proxy & VPN Blocker plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check and missing nonce validation on the fense_bpvt_save_settings() function in versions up to, and including, 3.0.1. The callback is registered to both wp_ajax_* and wp_ajax_nopriv_* hooks and unconditionally calls delete_option() on four plugin options and delete_transient() on three transients tied to the plugin's API key cache and settings. This makes it possible for unauthenticated attackers to delete plugin options and transients, effectively resetting the plugin's API key/data cache and forcing the plugin to refetch state.

Affected products

• Devozon Fense Proxy & VPN Blocker: up to and including 3.0.1

Published 2026-07-17. Last modified 2026-07-21.