CVE-2026-110252

The WPeMatico RSS Feed Fetcher plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 2.9 This is due to the plugin removing WordPress's wp_filter_post_kses filter from content_save_pre immediately before calling wp_insert_post() with RSS feed content, whenever the campaign's last editor had the unfiltered_html capability — a flag the plugin sets automatically for every admin-saved campaign. Imported item content is taken raw from $item->get_content(), only entity-decoded, and stored verbatim in post_content. This makes it possible for unauthenticated attackers, who publish or compromise an RSS feed that an administrator has subscribed a WPeMatico campaign to, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected imported post.

• https://github.com/etruel/wpematico/commit/44c4894a0ad92a711c534ad4d822c0b5d7c3dffe

• https://github.com/etruel/wpematico/commit/44c4894a0ad92a711c534ad4d822c0b5d7c3dffe
• https://plugins.trac.wordpress.org/browser/wpematico/tags/2.9/includes/campaign_fetch.php#L400
• https://plugins.trac.wordpress.org/browser/wpematico/tags/2.9/includes/campaign_fetch.php#L773
• https://plugins.trac.wordpress.org/browser/wpematico/tags/2.9/includes/campaign_fetch.php#L777
• https://plugins.trac.wordpress.org/browser/wpematico/tags/2.9/includes/wpematico_functions.php#L3226
• https://plugins.trac.wordpress.org/browser/wpematico/tags/2.9/includes/wpematico_functions.php#L3326
• https://plugins.trac.wordpress.org/changeset/3747465/wpematico/trunk/includes/campaign_fetch.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/e87fc1bf-af05-4089-a164-8a2e73c68e8c?source=cve

• MEDIUMCVE-2016-20098PoC
• MEDIUMCVE-2023-54408PoC
• UNSCOREDCVE-2023-5648
• MEDIUMCVE-2024-31027
• MEDIUMCVE-2024-34321
• MEDIUMCVE-2024-58391PoC
• MEDIUMCVE-2025-12828
• MEDIUMCVE-2025-13533PoC

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