CVE-2026-8719
AI Engine 3.4.9 - Authenticated (Subscriber+) Privilege Escalation via Missing Authorization in MCP OAuth Bearer Token
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
The AI Engine – The Chatbot, AI Framework & MCP for WordPress plugin for WordPress is vulnerable to Privilege Escalation in version 3.4.9. This is due to missing WordPress capability enforcement in the MCP OAuth bearer-token authorization path, where any valid OAuth token causes MCP access to be granted without verifying administrator privileges. This makes it possible for authenticated (Subscriber+) attackers to invoke admin-level MCP tools and escalate privileges to Administrator.
| CWE | CWE-269 |
| Vendor | tigroumeow |
| Product | ai engine – the chatbot, ai framework & mcp for wordpress |
| Published | May 17, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
tigroumeow / AI Engine – The Chatbot, AI Framework & MCP for WordPress
3.4.9
References
Credits
daroo