CVE-2026-109209

The All-in-One Video Gallery – Video Player & Galleries for YouTube, Vimeo & Self-Hosted Videos plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'custom_fields[embedcode]' parameter in all versions up to, and including, 4.9.7 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. The sanitization bypass is possible because the save_meta_data() handler returns early when $_POST['post_type'] is absent — a condition always true during XML-RPC requests — and the plugin unconditionally grants Subscribers the publish_aiovg_videos capability, making this exploitable by any authenticated user via a single wp.newPost XML-RPC call.

• https://plugins.trac.wordpress.org/browser/all-in-one-video-gallery/tags/4.9.7/admin/videos.php#L254
• https://plugins.trac.wordpress.org/browser/all-in-one-video-gallery/tags/4.9.7/includes/player/base.php#L1028
• https://plugins.trac.wordpress.org/browser/all-in-one-video-gallery/tags/4.9.7/includes/player/base.php#L277
• https://plugins.trac.wordpress.org/changeset/3759353/all-in-one-video-gallery/trunk/includes/player/base.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/cc6b1fa7-d5f9-4aec-860e-067c26745450?source=cve

• MEDIUMCVE-2012-20003PoC
• MEDIUMCVE-2012-20004PoC
• MEDIUMCVE-2012-20005PoC
• MEDIUMCVE-2013-20009PoC
• MEDIUMCVE-2014-125131PoC
• MEDIUMCVE-2014-125132PoC
• MEDIUMCVE-2016-20098PoC
• MEDIUMCVE-2016-20102PoC

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