Skip to content
CVE PROGRAM SOURCE RECORD7.5 High

CVE-2026-110732

AI Engine – The Chatbot, AI Framework & MCP for WordPress <= 3.8.6 - Missing Authorization to Administrator Account Takeover via Unauthenticated MCP OAuth Client Registration

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
Wordfence

Description

The AI Engine – The Chatbot, AI Framework & MCP for WordPress plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 3.8.6 This is due to the MCP module's OAuth 2.1 Dynamic Client Registration endpoint (/wp-json/mcp/v1/oauth/register) being registered with a permission_callback of __return_true, allowing an unauthenticated user to register an active OAuth client with an attacker-controlled redirect URI. This makes it possible for unauthenticated attackers to obtain an administrator-bound MCP access token, and thereby full administrator-level control through the MCP tools (including user creation and option updates), once an administrator approves the attacker's client on the OAuth consent screen. The consent page is additionally served without X-Frame-Options or Content-Security-Policy frame-ancestors, so that approval can be obtained via clickjacking.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

tigroumeow AI Engine – MCP Server & AI Chatbot for WordPress, with Claude, ChatGPT & Gemini

Default version status: unaffected

  • 0 to ≤ 3.8.6affected

References