WordPress Auto Thumbnail Plugin Stored Cross-Site Scripting Vulnerability

A stored cross-site scripting vulnerability has been identified in the Auto Thumbnail plugin for WordPress, affecting all versions through 1.0. The issue arises from inadequate input sanitization and output escaping on the 'width' and 'height' attributes of the 'thumbnails' shortcode. This vulnerability allows authenticated attackers with contributor-level access and above to inject arbitrary scripts into pages, which are executed when a user accesses the modified 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.