CVE-2026-8719 AI Engine 3.4.9 - Authenticated (Subscriber+) Privilege Escalation via Missing Authorization in MCP OAuth Bearer Token
Authenticated attackers can escalate privileges to Administrator by exploiting missing authorization checks in the MCP OAuth bearer-token path.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-8719?
CVE-2026-8719 is a high-severity vulnerability in tigroumeow AI Engine – The Chatbot, AI Framework & MCP for WordPress, published on 17 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-269
Which versions are affected by CVE-2026-8719?
How do I fix CVE-2026-8719?
No fix has been published for CVE-2026-8719 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-8719 being exploited?
There is no known exploitation of CVE-2026-8719 in the wild and no public exploit code.
Sources
Also known as GHSA-39f2-3f7m-6r66.