Description
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.
References8
- github.com/etruel/wpematico/commit/44c4894a0ad92a711c534ad4d822…
- plugins.trac.wordpress.org/browser/wpematico/tags/2.9/includes/…
- plugins.trac.wordpress.org/browser/wpematico/tags/2.9/includes/…
- plugins.trac.wordpress.org/browser/wpematico/tags/2.9/includes/…
- plugins.trac.wordpress.org/browser/wpematico/tags/2.9/includes/…
- plugins.trac.wordpress.org/browser/wpematico/tags/2.9/includes/…
- plugins.trac.wordpress.org/changeset/3747465/wpematico/trunk/in…
- www.wordfence.com/threat-intel/vulnerabilities/id/e87fc1bf-af05…
Metrics
- CVSS 3.1
-
5.4
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N - EPSS — exploit probability
- 0% percentile: 22 · as of 10 November 2026
- CWE
- CWE-79
Could this be exploited in your environment?
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