The Meta Box – A Framework for Dynamic Websites plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'profile_background[<attacker-chosen key>]' parameter in all versions up to, and including, 5.15.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitability depends on a consuming plugin or theme built on Meta Box that exposes the background field to lower-privileged users and renders stored values via the rwmb_the_value()/format_single_value() pattern; the effective minimum privilege is whatever role that consumer permits, demonstrated at Subscriber level.

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Fixes

Solution

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Workaround

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History

Thu, 29 Oct 2026 23:30:00 +0000

Type Values Removed Values Added
First Time appeared Metabox
Metabox meta Box
Wordpress-extensions
Wordpress-extensions meta Box
Vendors & Products Metabox
Metabox meta Box
Wordpress-extensions
Wordpress-extensions meta Box

Thu, 29 Oct 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 29 Oct 2026 11:30:00 +0000

Type Values Removed Values Added
Description The Meta Box – A Framework for Dynamic Websites plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'profile_background[<attacker-chosen key>]' parameter in all versions up to, and including, 5.15.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitability depends on a consuming plugin or theme built on Meta Box that exposes the background field to lower-privileged users and renders stored values via the rwmb_the_value()/format_single_value() pattern; the effective minimum privilege is whatever role that consumer permits, demonstrated at Subscriber level.
Title Meta Box <= 5.15.2 - Authenticated (Subscriber+) Stored Cross-Site Scripting via Background Field Array Keys
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 4.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-10-29T12:36:51.108Z

Reserved: 2026-10-12T13:39:09.653Z

Link: CVE-2026-109216

cve-icon Vulnrichment

Updated: 2026-10-29T12:29:10.082Z

cve-icon NVD

Status : Deferred

Published: 2026-10-29T12:17:09.640

Modified: 2026-10-29T14:56:26.107

Link: CVE-2026-109216

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-29T23:15:04Z

Weaknesses