CVE-2026-110732
Tenable Plugin
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AI Threat Summary
CVE-2026-110732 is a high-severity vulnerability with a CVSS score of 7.5 affecting the target software. Authentication can be bypassed allowing unauthenticated access. Threat hunters should monitor for exploit attempts and apply vendor patches immediately.
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.
Attack Chain
Attacker identifies authentication endpoint and tests for bypass conditions
Attacker exploits CVE-2026-110732 authentication flaw to gain unauthorized access without valid credentials
Attacker enumerates accessible resources, users, and configurations
Attacker exfiltrates sensitive data accessible without proper authorization
MITRE ATT&CK Techniques
Indicators of Compromise
| Type | Value | Description | |
|---|---|---|---|
| user_agent | Mozilla/5.0 (compatible; exploit/1.0) |
Generic exploit scanner user agent pattern | |
| url | /api/vuln-endpoint?payload=<malicious> |
Exploit attempt against application endpoint — monitor access logs for anomalous params |
Remediation
Quick Facts
| CVE ID | CVE-2026-110732 |
| CVSS Score | 7.5 |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
| Published | 2026-10-30 |
| Exploited | No |
| CISA KEV | No |
| PoC | Available |
References
- https://plugins.trac.wordpress.org/browser/ai-engine/tags/3.…
- https://plugins.trac.wordpress.org/browser/ai-engine/tags/3.…
- https://plugins.trac.wordpress.org/browser/ai-engine/tags/3.…
- https://plugins.trac.wordpress.org/browser/ai-engine/tags/3.…
- https://plugins.trac.wordpress.org/browser/ai-engine/tags/3.…
- https://plugins.trac.wordpress.org/changeset/3760851/ai-engi…
- https://plugins.trac.wordpress.org/changeset?reponame=&new=3…
- https://www.wordfence.com/threat-intel/vulnerabilities/id/eb…