CVE-2026-14488: CWE-862 Missing Authorization in Meta Box Meta Box AIO
Meta Box AIO plugin for WordPress versions up to and including 3.8.0 contains a missing authorization vulnerability in the MB Frontend Submission extension. This flaw allows unauthenticated attackers to delete arbitrary posts and pages by exploiting the mbfs_delete action routing without proper capability or ownership checks. The nonce verification intended to protect against such actions is bypassable due to being gated behind an AJAX check that does not apply to template_redirect requests. This vulnerability has a critical severity with a CVSS score of 9.1.
AI Analysis
Technical Summary
The Meta Box AIO WordPress plugin (<=3.8.0) suffers from a Missing Authorization vulnerability (CWE-862) in the MB Frontend Submission extension. The handle_request() function routes the mbfs_delete action without verifying user capabilities or ownership. Additionally, nonce verification in check_ajax() is only enforced during AJAX requests, which can be bypassed during template_redirect requests. This allows unauthenticated attackers to delete arbitrary posts or pages by supplying a malicious post ID via the rwmb_frontend_field_object_id GET parameter on any page hosting a frontend submission form, regardless of the allow_delete setting.
Potential Impact
An unauthenticated attacker can delete arbitrary posts and pages on a WordPress site using the vulnerable Meta Box AIO plugin. This results in a high impact on data integrity and availability, as content can be removed without authorization. There is no confidentiality impact reported. No known exploits in the wild have been documented at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to pages hosting frontend submission forms or disable the MB Frontend Submission extension if possible. Monitor for updates from the Meta Box vendor and apply official patches once released.
CVE-2026-14488: CWE-862 Missing Authorization in Meta Box Meta Box AIO
Description
Meta Box AIO plugin for WordPress versions up to and including 3.8.0 contains a missing authorization vulnerability in the MB Frontend Submission extension. This flaw allows unauthenticated attackers to delete arbitrary posts and pages by exploiting the mbfs_delete action routing without proper capability or ownership checks. The nonce verification intended to protect against such actions is bypassable due to being gated behind an AJAX check that does not apply to template_redirect requests. This vulnerability has a critical severity with a CVSS score of 9.1.
CVSS v3.1
Score 9.1critical
Affected software
Meta Box
Meta Box AIO
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Meta Box AIO WordPress plugin (<=3.8.0) suffers from a Missing Authorization vulnerability (CWE-862) in the MB Frontend Submission extension. The handle_request() function routes the mbfs_delete action without verifying user capabilities or ownership. Additionally, nonce verification in check_ajax() is only enforced during AJAX requests, which can be bypassed during template_redirect requests. This allows unauthenticated attackers to delete arbitrary posts or pages by supplying a malicious post ID via the rwmb_frontend_field_object_id GET parameter on any page hosting a frontend submission form, regardless of the allow_delete setting.
Potential Impact
An unauthenticated attacker can delete arbitrary posts and pages on a WordPress site using the vulnerable Meta Box AIO plugin. This results in a high impact on data integrity and availability, as content can be removed without authorization. There is no confidentiality impact reported. No known exploits in the wild have been documented at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to pages hosting frontend submission forms or disable the MB Frontend Submission extension if possible. Monitor for updates from the Meta Box vendor 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
Threat ID: 6a69d4879c2644c7f856ba4d
Added to database: 07/29/2026, 10:23:03 UTC
Last enriched: 08/05/2026, 14:59:15 UTC
Last updated: 09/12/2026, 22:01:31 UTC
Views: 58
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