AcyMailing SMTP Newsletter < 11.0.0 - Authenticated (Subscriber+) Stored Cross-Site Scripting

Description

The AcyMailing SMTP Newsletter plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 10.11.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.