The Text to Speech for WP (AI Voices by Mementor) plugin for WordPress is vulnerable to sensitive information exposure in all versions up to, and including, 1.9.8. This is due to the plugin containing hardcoded MySQL database credentials for the vendor's external telemetry server in the Mementor_TTS_Remote_Telemetry class. This makes it possible for unauthenticated attackers to extract and decode these credentials, gaining unauthorized write access to the vendor's telemetry database.