Vulnerability in WPeMatico RSS Feed Fetcher — CVE-2026-110252
What to do now
Update WPeMatico RSS Feed Fetcher to 2.9.1 or later.
Affected versions
- Everything up to and including 2.9
Affected: WPeMatico RSS Feed Fetcher (plugin, wpematico)
What the vulnerability is
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.
Sources
- 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