The Kubio AI Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via kubio/copyright Block Content in all versions up to, and including, 2.8.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This bypasses both the WordPress core kses-on-save filter and the plugin's own wp_kses_post() call, because entity-encoded script tags are treated as inert text by kses but are decoded into live HTML by the subsequent html_entity_decode() call in CopyrightBlock::render_template().

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Fixes

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History

Sat, 19 Sep 2026 02:15:00 +0000

Type Values Removed Values Added
First Time appeared Extendthemes
Extendthemes kubio Ai Page Builder
Wordpress
Wordpress wordpress
Vendors & Products Extendthemes
Extendthemes kubio Ai Page Builder
Wordpress
Wordpress wordpress

Fri, 18 Sep 2026 12:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Fri, 18 Sep 2026 07:45:00 +0000

Type Values Removed Values Added
Description The Kubio AI Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via kubio/copyright Block Content in all versions up to, and including, 2.8.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This bypasses both the WordPress core kses-on-save filter and the plugin's own wp_kses_post() call, because entity-encoded script tags are treated as inert text by kses but are decoded into live HTML by the subsequent html_entity_decode() call in CopyrightBlock::render_template().
Title Kubio AI Page Builder <= 2.8.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via kubio/copyright Block Content
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:L/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: 2026-09-18T11:29:01.464Z

Reserved: 2026-07-02T14:33:10.545Z

Link: CVE-2026-14472

cve-icon Vulnrichment

Updated: 2026-09-18T11:28:57.728Z

cve-icon NVD

Status : Deferred

Published: 2026-09-18T08:16:59.567

Modified: 2026-09-18T13:23:37.403

Link: CVE-2026-14472

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-19T20:30:07Z

Weaknesses