List Attachments Shortcode Stored Cross-Site Scripting Vulnerability

A stored cross-site scripting vulnerability has been identified in the List Attachments Shortcode plugin for WordPress, affecting all versions up to and including 0.4.1a. The issue arises from inadequate input sanitization and output escaping, allowing authenticated attackers with Author-level access or higher to inject arbitrary web scripts via the 'before_list' parameter in the [list-attachments] shortcode. These injected scripts are executed when a user accesses the affected page.

Impact

Exploitation of this vulnerability allows for stored cross-site scripting, where injected scripts are executed in the context of the user viewing the page.

Remediation

No known patch is available. Users are advised to review the vulnerability details and consider uninstalling the affected plugin.