CVE-2023-6877: 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
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.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2023-6877?
CVE-2023-6877 has been classified as a medium severity vulnerability due to its potential impact on user security.
How do I fix CVE-2023-6877?
To fix CVE-2023-6877, update the RSS Aggregator by Feedzy plugin to version 4.3.4 or later.
What type of vulnerability is CVE-2023-6877?
CVE-2023-6877 is a Stored Cross-Site Scripting (XSS) vulnerability.
Which versions are affected by CVE-2023-6877?
CVE-2023-6877 affects all versions of the RSS Aggregator by Feedzy plugin up to and including 4.3.3.
What causes CVE-2023-6877?
CVE-2023-6877 is caused by insufficient input sanitization and output escaping on the plugin's shortcodes.