RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News & YouTube Video Feeds Aggregator <= 4.3.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Error Message

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2023-6877
CVSS Medium (6.4)
Publicly Published April 6, 2024
Last Updated July 29, 2024
Researcher Colin Xu
Description

The RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News & YouTube Video Feeds Aggregator plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's shortcode(s) in all versions up to, and including, 4.3.3 due to insufficient input sanitization and output escaping on the Content-Type field of error messages when retrieving an invalid RSS feed. 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.

References

1 affected software package

Software Type Plugin
Software Slug feedzy-rss-feeds (view on wordpress.org)
Patched? Yes
Affected Version
  • <= 4.3.3
Patched Version
  • 4.3.4
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