CVE-2026-14488: CWE-862 Missing Authorization in Meta Box Meta Box AIO
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.
AI Analysis
Technical Summary
CVE-2026-14488 is a missing authorization vulnerability (CWE-862) in the Meta Box AIO WordPress plugin, specifically in the MB Frontend Submission extension up to version 3.8.0. The handle_request() function routes the mbfs_delete action without verifying user capabilities or ownership. Additionally, nonce verification in check_ajax() is only performed for AJAX requests, which does not cover template_redirect requests where the mbfs_delete action can be triggered. This allows unauthenticated attackers to delete arbitrary posts or pages by supplying a crafted rwmb_frontend_field_object_id GET parameter on any page hosting a frontend submission form, regardless of the allow_delete setting.
Potential Impact
The vulnerability allows unauthenticated attackers to delete arbitrary WordPress posts and pages, impacting the integrity and availability of website content. There is no confidentiality impact reported. The CVSS v3.1 score is 9.1 (critical), reflecting network attack vector, low attack complexity, no privileges required, no user interaction, and high impact on integrity and availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to pages hosting frontend submission forms or disable the MB Frontend Submission extension if feasible. Monitor vendor channels for updates and apply official patches once released.
CVE-2026-14488: CWE-862 Missing Authorization in Meta Box Meta Box AIO
Description
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.
CVSS v3.1
Score 9.1critical
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-14488 is a missing authorization vulnerability (CWE-862) in the Meta Box AIO WordPress plugin, specifically in the MB Frontend Submission extension up to version 3.8.0. The handle_request() function routes the mbfs_delete action without verifying user capabilities or ownership. Additionally, nonce verification in check_ajax() is only performed for AJAX requests, which does not cover template_redirect requests where the mbfs_delete action can be triggered. This allows unauthenticated attackers to delete arbitrary posts or pages by supplying a crafted rwmb_frontend_field_object_id GET parameter on any page hosting a frontend submission form, regardless of the allow_delete setting.
Potential Impact
The vulnerability allows unauthenticated attackers to delete arbitrary WordPress posts and pages, impacting the integrity and availability of website content. There is no confidentiality impact reported. The CVSS v3.1 score is 9.1 (critical), reflecting network attack vector, low attack complexity, no privileges required, no user interaction, and high impact on integrity and availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to pages hosting frontend submission forms or disable the MB Frontend Submission extension if feasible. Monitor vendor channels for updates and apply official patches once released.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-07-02T17:05:26.315Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a69d4879c2644c7f856ba4d
Added to database: 07/29/2026, 10:23:03 UTC
Last enriched: 07/29/2026, 10:37:59 UTC
Last updated: 07/30/2026, 01:28:45 UTC
Views: 11
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