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CVE-2026-8616

5.3 · MEDIUM

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(…

Published Jul 17, 2026CWE-862EPSS 0.39%

Overview

CVE-2026-8616 is a medium-severity vulnerability. It was published on July 17, 2026 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refplugins.trac.wordpress.org/browser/fense-block-vpn-proxy/tags/2.9.0/includes/system/fense-bpvt-header-code.php#L32Refplugins.trac.wordpress.org/browser/fense-block-vpn-proxy/tags/2.9.0/includes/system/fense-bpvt-header-code.php#L48Refplugins.trac.wordpress.org/browser/fense-block-vpn-proxy/tags/3.0.2/includes/system/header-code.php?rev=3574545Refwww.wordfence.com/threat-intel/vulnerabilities/id/1208ac78-4a56-4daa-b935-d579f07f8e8e?source=cve

How CyberStrike helps

Frequently asked questions

What is CVE-2026-8616?

CVE-2026-8616 is a medium-severity vulnerability. It was published on July 17, 2026 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2026-8616?

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-8616?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-8616?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-8616 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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