Activity Log – Monitor & Record User Changes <= 2.11.1 - Unauthenticated Stored Cross-Site Scripting via Event Context

The Activity Log – Monitor & Record User Changes plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the event parameters in all versions up to, and including, 2.11.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever an administrative user accesses an injected page.