CVE-2026-14488 PUBLISHED

Meta Box AIO <= 3.8.0 - Missing Authorization to Unauthenticated Arbitrary Post Deletion via 'rwmb_frontend_field_object_id' Parameter

Assigner: Wordfence
Reserved: 02.07.2026 Published: 29.07.2026 Updated: 29.07.2026

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.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
CVSS Score: 9.1

Product Status

Vendor Meta Box
Product Meta Box AIO
Versions Default: unaffected
  • affected from 0 to 3.8.0 (incl.)

Credits

  • Austin Ginder finder

References

Problem Types

  • CWE-862 Missing Authorization CWE