WordPress security changelog
MEDIUM CVE-2026-89141 Deferred

AI Engine lets subscribers transcribe private audio belonging to other users

AI Engine through 3.7.7 accepts a caller-controlled mediaId without verifying that the caller can read the selected attachment. When the Public API module is enabled, an authenticated Subscriber or higher can supply another user's private audio attachment ID and retrieve its transcribed contents, including audio belonging to administrators. With that module disabled, the affected REST route is absent and returns HTTP 404. The export does not disclose the full REST route or callback name. The official 3.7.8 changelog confirms that transcription and image-edit endpoints now check the caller's read permission on supplied attachments, matching the reported flaw.

CVE / CNA score 6.5 CVSS 3.1 · security@wordfence.com
NVD score Pending NVD has not published its own CVSS assessment.
Component
AI Engine – The Chatbot, AI Framework & MCP for WordPress
Plugin slug
ai-engine
Affected
<= 3.7.7
Safe version
3.7.8
Published
Sep 15, 2026
Weakness
CWE-639 — Authorization Bypass Through User-Controlled Key

This CVE was published Sep 15, 2026 and is one of 35 known issues for this plugin.

What to do

Update, patch or deactivate.

Update AI Engine to 3.7.8 or later. Disable its Public API module until updated if that interface is not required. The application-level fix must validate mediaId, load the intended attachment, and enforce the caller's permission to read that specific private attachment before transcription or returning its contents. A general logged-in check is insufficient.

A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical description

The AI Engine – The Chatbot, AI Framework & MCP for WordPress plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.7.7 via the 'mediaId' parameter due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with subscriber-level access and above, to access and retrieve the transcribed contents of private audio attachments belonging to other users, including Administrators, via a supplied attachment ID. This vulnerability requires the Public API module to be enabled in the plugin settings; when disabled, the REST route is absent and the endpoint returns HTTP 404.

CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References

Primary and upstream sources