WordPress Picture Gallery Plugin Stored Cross-Site Scripting Vulnerability

A stored cross-site scripting vulnerability has been identified in the Picture Gallery – Frontend Image Uploads, AJAX Photo List plugin for WordPress, affecting all versions through 1.5.22. The issue arises from inadequate input sanitization and output escaping on user-supplied attributes, particularly within the videowhisper_picture_upload_guest shortcode. This vulnerability allows authenticated attackers with contributor-level access or higher to inject arbitrary scripts into pages, which are executed when users access 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

Users can update to version 1.5.23 or a newer patched version to address this vulnerability.