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TI-2026-07661 Aliases CVE-2026-8719GHSA-39f2-3f7m-6r66

AI Engine 3.4.9 - Authenticated (Subscriber+) Privilege Escalation via Missing Authorization in MCP OAuth Bearer Token

Priority MEDIUM 40CWE-269Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Privilege escalation
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-269.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00359 29th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
tigroumeowAI Engine – The Chatbot, AI Framework & MCP for WordPress3.4.9—No fix listedCNA
  • AI Engine – The Chatbot, AI Framework & MCP for WordPress Vendortigroumeow Affected 3.4.9 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-8719
  2. 2026-10-03 Alias added: GHSA-39f2-3f7m-6r66

References

Other 2

  • TI-2025-10772 AI Engine <= 3.1.3 - Unauthenticated Sensitive Information Exposure to Privilege Escalation CVSS 3.1CRITICAL 9.8
  • TI-2023-28063 WordPress AI Engine plugin <= 1.9.98 - Unauthenticated Arbitrary File Upload vulnerability CVSS 3.1CRITICAL 10.0
  • TI-2024-09725 AI-Engine < 2.6.5 - Admin+ SQLi CVSS 3.1HIGH 7.2
  • TI-2024-05988 AI Engine < 2.5.1 - Admin+ RCE CVSS 3.1HIGH 7.2
  • TI-2024-19264 WordPress AI Engine plugin <= 2.1.4 - Server Side Request Forgery (SSRF) vulnerability CVSS 3.1MEDIUM 6.8
  • TI-2024-06230 AI Engine < 2.4.8 - Admin+ SQLi CVSS 3.1MEDIUM 4.7
See all 57 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences