CVE-2026-8719AI Engine 3.4.9 - Authenticated (Subscriber+) Privilege Escalation via Missing Authorization in MCP OAuth Bearer Token
Updated under an hour ago ()
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It affects tigroumeow AI Engine – The Chatbot, AI Framework & MCP for WordPress. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-269
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Wordfence
- NVD analysis
- Deferred
- Record last updated
- May 18, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
tigroumeow AI Engine – The Chatbot, AI Framework & MCP for WordPress tigroumeow:ai_engine_the_chatbot_ai_framework_and_mcp_for_wordpress (from the name) | 3.4.9 | CNA record |
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/0593c20d-3422-4817-9639-614254b609db?source=cve
- https://plugins.trac.wordpress.org/changeset/3533527/ai-engine
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.