WP SEO Structured Data Schema Stored Cross-Site Scripting Vulnerability

A stored cross-site scripting vulnerability has been identified in the WP SEO Structured Data Schema plugin for WordPress, affecting all versions through 2.7.11. The issue arises from inadequate input sanitization and output escaping, allowing authenticated attackers with Contributor-level access or higher to inject arbitrary scripts. These scripts are executed when an administrator accesses the plugin's settings page.

Impact

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

Reproduction

To reproduce this vulnerability, an authenticated user with Contributor-level access or higher can inject scripts through the 'Price Range' parameter in the plugin settings. Once the injection is made, the script will execute when an administrator views the settings page.

Remediation

Users are advised to update the WP SEO Structured Data Schema plugin to version 2.8.0 or later.