Input validation vulnerability in Anchor Episodes Index (Spotify for Podcasters) 2.1.10

The Anchor Episodes Index plugin for WordPress, which is used for Spotify podcasts, has a security vulnerability. This means that the plugin is at risk of being attacked by malicious code. The vulnerability is present in all versions up to and including 2.1.10 because the plugin does not properly clean or protect user input. This allows attackers with contributor-level access or higher to inject harmful code into pages, which will be executed whenever a user opens the affected page.