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AI Engine <= 3.6.3 — Insecure Direct Object Reference to Unauthenticated Cross-Session Chatbot File Deletion

CVE-2026-16953Published · Updated

Action summary

Affected: ≤3.6.3Update to 3.6.4 or newer

All remediation steps
Watch plugin
Severity
Medium5.3
CVSS
5.3
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:N Privileges required
None
UI:N User interaction
None
S:U Scope
Unchanged
C:N Confidentiality
None
I:L Integrity
Low
A:N Availability
None
Weakness
CWE-639 Authorization Bypass Through User-Controlled Key
Required access
No account needed
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

AI Engine – MCP Server & AI Chatbot for WordPress, with Claude, ChatGPT & Gemini ai-engine

  1. Affected≤ 3.6.3
  2. Patched in3.6.4

Update to 3.6.4 or newer.

You are affected if you run ≤ 3.6.3. Version 3.6.4 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under AI Engine – MCP Server & AI Chatbot for WordPress, with Claude, ChatGPT & Gemini.
  • No admin access? Run a passive check of your site. It reads public files only.
  • No account is needed to exploit this. Treat any exposed site on an affected version as at risk.

What to do

  1. Update to version 3.6.4, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch AI Engine – MCP Server & AI Chatbot for WordPress, with Claude, ChatGPT & Gemini to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to Revanth Hari Narayana Matte.

The AI Engine plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to, and including, 3.6.3. This is due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to perform an unauthorized action.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

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

All 46
More vulnerabilities in AI Engine – MCP Server & AI Chatbot for WordPress, with Claude, ChatGPT & Gemini
SeverityVulnerabilityCVEPublished
High7.2Unauthenticated Stored Cross-Site Scripting
≤3.9.1Update to 3.9.2
CVE-2026-123478
Medium4.3Cross-Site Request Forgery
≤3.8.8Update to 3.8.9
CVE-2026-65566
High7.5Missing Authorization to Administrator Account Takeover via Unauthenticated MCP OAuth Client Registration
≤3.8.6Update to 3.8.7
CVE-2026-110732
Medium4.2Authenticated (Subscriber+) Limited Media File Deletion via 'metadata' Parameter
≤3.8.4Update to 3.8.5
CVE-2026-107745
Medium4.3Missing Authorization
≤3.8.6Update to 3.8.7
CVE-2026-112828

Timeline

  1. CVE published

    Severity medium, CVSS 5.3

  2. Record last updated

Sources & licenses

Wordfence record
Vulnerability data
Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
CVE® identifiers
[object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
CVSS / CWE
National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
VulnCrest content
Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.

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