RSS Aggregator – RSS Import, News Feeds, Feed to Post, and Autoblogging <= 5.0.11 - Unauthenticated DOM-Based Reflected Cross-Site Scripting via postMessage
| CVE | CVE-2026-2433 |
|---|---|
| CVSS | 6.1 (Medium) |
| Publicly Published | March 6, 2026 |
| Last Updated | March 7, 2026 |
| Researcher |
Osvaldo Noe Gonzalez Del Rio (Os)
- krei.dev | ogbuilders.io
|
Description
The RSS Aggregator – RSS Import, News Feeds, Feed to Post, and Autoblogging plugin for WordPress is vulnerable to DOM-Based Cross-Site Scripting via postMessage in all versions up to, and including, 5.0.11. This is due to the plugin's admin-shell.js registering a global message event listener without origin validation (missing event.origin check) and directly passing user-controlled URLs to window.open() without URL scheme validation. This makes it possible for unauthenticated attackers to execute arbitrary JavaScript in the context of an authenticated administrator's session by tricking them into visiting a malicious website that sends crafted postMessage payloads to the plugin's admin page.
Learn more about Cross-Site Scripting vulnerabilities and how to prevent them.
References
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
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Vulnerability Details for WP RSS Aggregator – RSS Import, Feed to Post, Autoblogging, AI Content
| Software Type | Plugin |
|---|---|
| Software Slug | wp-rss-aggregator (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 5.0.12, or a newer patched version |
| Affected Version |
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| Patched Version |
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Recent vulnerabilities in WP RSS Aggregator – RSS Import, Feed to Post, Autoblogging, AI Content
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