cve/2023/CVE-2023-6877.md

### [CVE-2023-6877](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6877)
![](https://img.shields.io/static/v1?label=Product&message=RSS%20Aggregator%20by%20Feedzy%20%E2%80%93%20Feed%20to%20Post%2C%20Autoblogging%2C%20News%20%26%20YouTube%20Video%20Feeds%20Aggregator&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=*%3C%3D%204.3.3%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-79%20Improper%20Neutralization%20of%20Input%20During%20Web%20Page%20Generation%20('Cross-site%20Scripting')&color=brighgreen)

### 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.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/fkie-cad/nvd-json-data-feeds