WordPress User Submitted Posts Plugin <= 20230902 is vulnerable to Arbitrary File Upload

Unrestricted Upload of File with Dangerous Type vulnerability in Jeff Starr User Submitted Posts – Enable Users to Submit Posts from the Front End.This issue affects User Submitted Posts – Enable Users to Submit Posts from the Front End: from n/a through 20230902.

User Submitted Posts – Enable Users to Submit Posts from the Front End <= 20230811 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode

The User Submitted Posts plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's [usp_gallery] shortcode in versions up to, and including, 20230811 due to insufficient input sanitization and output escaping on user supplied attributes like 'before'. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

User Submitted Posts <= 20190312 - Unauthenticated Arbitrary File Upload

The User Submitted Posts plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the usp_check_images function in versions up to, and including, 20190312. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected sites server which may make remote code execution possible.

User Submitted Posts <= 20230809 - Unauthenticated Stored Cross-Site Scripting via 'user-submitted-content'

The User Submitted Posts plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘user-submitted-content’ parameter in versions up to, and including, 20230809 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

User Submitted Posts < 20240516 - Admin+ Stored XSS

The User Submitted Posts WordPress plugin before 20240516 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)

The user-submitted-posts plugin before 20160215 for WordPress has XSS via the user-submitted-content field.