CVE-2026-1400 File upload in AI Engine – The Chatbot, AI Framework & MCP for WordPress
Authenticated editors can upload arbitrary files via the update_media_metadata endpoint, potentially leading to remote code execution on the server.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-1400?
CVE-2026-1400 is a high-severity vulnerability in tigroumeow AI Engine – The Chatbot, AI Framework & MCP for WordPress, published on 28 Jan 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
The AI Engine – The Chatbot and AI Framework for WordPress plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the `rest_helpers_update_media_metadata` function in all versions up to, and including, 3.3.2. This makes it possible for authenticated attackers, with Editor-level access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible. The attacker can upload a benign image file, then use the `update_media_metadata` endpoint to rename it to a PHP file, creating an executable PHP file in the uploads directory.
Weakness: CWE-434
Which versions are affected by CVE-2026-1400?
How do I fix CVE-2026-1400?
No fix has been published for CVE-2026-1400 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-1400 being exploited?
There is no known exploitation of CVE-2026-1400 in the wild and no public exploit code.
Sources
Also known as GHSA-h8c7-c2x8-j8gf.