The AI Engine plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 3.1.3 via the /mcp/v1/ REST API endpoint that exposes the 'Bearer Token' value when 'No-Auth URL' is enabled. This makes it possible for unauthenticated attackers to extract the bearer token, which can be used to gain access to a valid session and perform many actions like creating a new administrator account, leading to privilege escalation.

The AI Engine plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the restsimpleFileUpload() function in versions 2.9.3 and 2.9.4. This makes it possible for authenticated attackers, with Subscriber-level access and above, to upload arbitrary files on the affected site's server when the REST API is enabled, which may make remote code execution possible.

The AI Engine plugin for WordPress is vulnerable to unauthorized access and loss of data due to a missing capability check on the restlist and deletefiles functions in all versions up to, and including, 2.9.5. This makes it possible for unauthenticated attackers to list and delete files uploaded by other users.

The AI Engine plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the mwaichatbot shortcode 'id' parameter in all versions up to, and including, 2.8.4 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.