CVE-2026-14488
CriticalCVSS 9.1Exploitation Probability (EPSS)
Low risk23th percentile - higher than 23% of all known CVEs
Summary
Meta Box AIO plugin for WordPress up to 3.8.0 (with MB Frontend Submission) lacks authorization in the template_redirect dispatcher. The handle_request() function routes the mbfs_delete action without capability checks, and nonce verification is bypassed because is_ajax() returns false for template_redirect requests. Unauthenticated attackers can delete arbitrary posts and pages by supplying a post ID via the rwmb_frontend_field_object_id parameter.
Risk Assessment
An attacker can delete any content on the WordPress site, leading to data loss and site disruption.
Recommendation
Update Meta Box AIO to version 3.8.1 or later which includes the authorization fix.
Original NVD description (English source)
The Meta Box AIO plugin for WordPress is vulnerable to Missing Authorization via the template_redirect dispatcher in the MB Frontend Submission extension in versions up to, and including, 3.8.0. This is due to the handle_request() function routing the mbfs_delete action without any capability or ownership check, and the nonce verification in check_ajax() being gated behind is_ajax() which is false for template_redirect requests, making it bypassable. This makes it possible for unauthenticated attackers to delete arbitrary posts and pages by supplying an attacker-controlled post ID via the rwmb_frontend_field_object_id GET parameter on any page that hosts a frontend submission form regardless of whether allow_delete is enabled.