Executive brief
The AI Engine is a WordPress plugin that powers chatbot and AI features for websites. A flaw in its API allows authenticated users to bypass access controls and retrieve private audio files and their transcriptions belonging to other users, including administrators, by manipulating file IDs. This could expose sensitive audio content and conversations without proper authorization.
Technical details
The vulnerability is an Insecure Direct Object Reference (IDOR) in the plugin's REST API endpoint, specifically in the handling of the 'mediaId' parameter. The flaw exists due to missing validation on user-controlled keys, allowing an authenticated attacker with subscriber-level privileges to directly reference and retrieve private audio attachments belonging to other users. The attack requires the Public API module to be enabled; when disabled, the endpoint is inaccessible. An authenticated attacker can craft requests to the affected endpoint with different attachment IDs to access transcribed audio content from any user account, including privileged ones.
Affected products
- Leap AI Engine up to and including 3.7.7
Timeline
- 2026-09-15: disclosed