CVE-2026-120573
Deferred Deferred - Pending Action

Stored XSS in WPeMatico RSS Feed Fetcher WordPress Plugin

Publication date: 2026-11-13

Last updated on: 2026-11-13

Assigner: Wordfence

Description
The WPeMatico RSS Feed Fetcher plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'post_category' parameter in all versions up to, and including, 2.9.1 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. The injected payload is persisted in post meta as campaign_data, bypassing wp_kses sanitization, and executes in the browser session of any user with edit_posts — including Administrators — who opens the WPeMatico campaigns list screen.

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Meta Information

Published
2026-11-13
Last Modified
2026-11-13
Generated
2026-11-13
AI Q&A
2026-11-13
EPSS Evaluated
N/A
NVD
CVE-2026-120573
EUVD
EUVD-2026-124990

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
etruel WPeMatico RSS Feed Fetcher From 0 (inc) to 2.9.1 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

The WPeMatico RSS Feed Fetcher WordPress plugin up to version 2.9.1 has a stored Cross-Site Scripting (XSS) vulnerability. This flaw allows authenticated attackers with contributor-level access or higher to inject malicious scripts via the 'post_category' parameter. The injected scripts are stored in post meta as campaign_data and bypass WordPress's wp_kses sanitization. When an administrator or user with edit_posts capability views the WPeMatico campaigns list screen, the malicious script executes in their browser.

Detection Guidance

Check WordPress sites using WPeMatico versions up to 2.9.1 for stored XSS via the post_category parameter. Inspect post meta for campaign_data entries containing suspicious scripts. Review user roles with contributor access or higher for unauthorized changes.

Impact Analysis

This vulnerability allows attackers to inject malicious scripts into your WordPress site. If exploited, it could lead to unauthorized actions on behalf of users, theft of sensitive data like cookies or session tokens, or defacement of your website. Since the payload executes when administrators access the campaigns list, it poses a significant risk to site integrity and user trust.

Compliance Impact

This vulnerability could lead to data breaches, exposing user data and violating privacy regulations like GDPR or HIPAA. If malicious scripts steal user data, the affected organization may face legal penalties, fines, and reputational damage due to non-compliance with data protection requirements.

Mitigation Strategies

Update WPeMatico to the latest version (2.9.2 or higher) immediately. Remove or restrict contributor-level access to untrusted users. Audit campaigns and post meta for injected scripts. Consider disabling the plugin temporarily if updates are unavailable.

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