Slimstat Analytics <= 5.2.6 - Unauthenticated Stored Cross-Site Scripting

The SlimStat Analytics plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the resource parameter in all versions up to, and including, 5.2.6 due to insufficient input sanitization and output escaping when logging visitor requests. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.