ShortPixel Adaptive Images WordPress Plugin Stored Cross-Site Scripting Vulnerability

A stored cross-site scripting vulnerability has been identified in the ShortPixel Adaptive Images WordPress plugin, specifically in versions through 3.10.3. The issue arises from inadequate input sanitization and output escaping, allowing authenticated attackers with administrator access to inject arbitrary scripts via the API URL setting. This vulnerability is particularly impactful in multi-site installations and those where the 'unfiltered_html' capability has been disabled.

Impact

Exploitation of this vulnerability allows for stored cross-site scripting, where injected scripts are executed when users access the affected pages.

Remediation

Users are advised to update the ShortPixel Adaptive Images WordPress plugin to version 3.10.5 or later.