What the vulnerability does
01Description
The User Submitted Posts – Enable Users to Submit Posts from the Front End plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'usp_access' shortcode in all versions up to, and including, 20260110 due to insufficient input sanitization and output escaping on user supplied attributes. 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.
Explanation of Vulnerability in Simple Terms
02Summary
User Submitted Posts plugin for WordPress contains a cross-site scripting (XSS) vulnerability in versions up to 20260110. An attacker with low-level user privileges can inject malicious scripts that execute in other users' browsers, potentially stealing session tokens or performing actions on their behalf. The vulnerability affects the site-wide scope due to how the plugin processes user-submitted content.
What an attacker can do
03Attacker Capabilities
Inject JavaScript code that runs in other users' browsers when they view submitted posts.
Potential impact on your site
04Site Impact
Authenticated users can inject malicious scripts affecting other site visitors; session hijacking and unauthorized actions are possible.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege user account (e.g., contributor or subscriber role) on the site.
Key dates
06Disclosure timeline
January 16, 2026
CVE published
April 8, 2026
Record updated
