CVE-2026-8616 Missing authorization in Fense Proxy & VPN Blocker
Unauthenticated attackers can delete plugin options and transients, resetting the API key cache and forcing state refetching.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-8616?
CVE-2026-8616 is a medium-severity missing authorization vulnerability in devozon Fense Proxy & VPN Blocker, published on 17 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-862
Which versions are affected by CVE-2026-8616?
How do I fix CVE-2026-8616?
No fix has been published for CVE-2026-8616 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-8616 being exploited?
There is no known exploitation of CVE-2026-8616 in the wild and no public exploit code.
Sources
Also known as GHSA-56hc-jghx-566j.