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High severity · published Jan 28, 2026
CVE-2026-1400
AI Engine <= 3.3.2 - Authenticated (Editor+) Arbitrary File Upload via 'filename' Parameter in update_media_metadata Endpoint
7.2
CVSS
0.7%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 54% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AE
AI Engine – The Chatbot, AI Framework & MCP for WordPress · tigroumeow
through 3.3.2 · source: vendor
Affected product
AE
AI Engine – The Chatbot, AI Framework & MCP for WordPress
tigroumeow
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-1400
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-1400
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/ai-engine/tags/3.3.0/classes/rest.php#L1104
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/ai-engine/tags/3.3.0/classes/rest.php#L1141
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset/3447500/ai-engine/trunk/classes/rest.php
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/d5227269-4406-4fcf-af37-f1db0af857d6?source=cve
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