{"id":"CVE-2026-109216","revision":"484ed7e92ab64639940cad3d6e2e779f","records":[{"revision":"484ed7e92ab64639940cad3d6e2e779f","observedAt":"2026-10-29T13:12:12.589+00:00","statement":{"source":"cve-program","id":"CVE-2026-109216","aliases":[],"title":"Meta Box <= 5.15.2 - Authenticated (Subscriber+) Stored Cross-Site Scripting via Background Field Array Keys","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.","state":0,"publishedAt":"2026-10-29T11:27:14.853+00:00","modifiedAt":"2026-10-29T11:27:14.853+00:00","affected":[{"ecosystem":"Vendor product","name":"Meta Box – A Framework for Dynamic Websites","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"metabox\",\n                    \"product\": \"Meta Box – A Framework for Dynamic Websites\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"lessThanOrEqual\": \"5.15.2\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N","score":4.9,"severity":"MEDIUM"}],"references":["https://www.wordfence.com/threat-intel/vulnerabilities/id/7a8948f5-8bcf-48f2-b3a6-bfa24ba9bef0?source=cve","https://plugins.trac.wordpress.org/browser/meta-box/tags/5.15.2/inc/fields/background.php#L154","https://plugins.trac.wordpress.org/browser/meta-box/tags/5.15.2/inc/sanitizer.php#L170","https://github.com/wpmetabox/meta-box/pull/1709","https://plugins.trac.wordpress.org/browser/meta-box/tags/5.15.3/inc/fields/background.php"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-109216","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-109216","identifiers":["CVE-2026-109216"]},"retained":false,"historicalAffected":[]}],"coverage":[]}