CVE-2025-5570

5.4 MEDIUM

📋 TL;DR

The AI Engine WordPress plugin has a stored cross-site scripting vulnerability in the mwai_chatbot shortcode's 'id' parameter. Authenticated attackers with Subscriber-level access or higher can inject malicious scripts that execute when users view compromised pages. This affects all WordPress sites using AI Engine plugin versions up to 2.8.4.

💻 Affected Systems

Products:
  • AI Engine WordPress Plugin
Versions: All versions up to and including 2.8.4
Operating Systems: Any OS running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: Requires WordPress installation with AI Engine plugin enabled and at least one user with Subscriber role or higher.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Attackers could steal admin credentials, redirect users to malicious sites, deface websites, or perform actions on behalf of authenticated users.

🟠

Likely Case

Attackers with subscriber accounts inject malicious scripts to steal session cookies or redirect users to phishing pages.

🟢

If Mitigated

With proper input validation and output escaping, the vulnerability would be prevented entirely.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: LIKELY
Unauthenticated Exploit: ✅ No
Complexity: LOW

Requires authenticated access (Subscriber role minimum). Exploitation is straightforward once authenticated.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 2.8.5 or later

Vendor Advisory: https://plugins.trac.wordpress.org/browser/ai-engine/tags/2.8.5/

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find AI Engine plugin. 4. Click 'Update Now' if available. 5. Alternatively, download version 2.8.5+ from WordPress repository and replace plugin files.

🔧 Temporary Workarounds

Disable AI Engine Plugin

all

Temporarily disable the vulnerable plugin until patched.

wp plugin deactivate ai-engine

Restrict User Registration

all

Disable new user registration to prevent attackers from obtaining Subscriber accounts.

wp option update users_can_register 0

🧯 If You Can't Patch

  • Implement Web Application Firewall (WAF) rules to block XSS payloads in POST/GET parameters
  • Review and audit all user accounts with Subscriber role or higher for suspicious activity

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel > Plugins > Installed Plugins for AI Engine version. If version is 2.8.4 or lower, you are vulnerable.

Check Version:

wp plugin get ai-engine --field=version

Verify Fix Applied:

After updating, verify AI Engine plugin version shows 2.8.5 or higher in WordPress admin.

📡 Detection & Monitoring

Log Indicators:

  • Unusual POST requests to WordPress containing script tags in parameters
  • Multiple failed login attempts followed by successful Subscriber-level login

Network Indicators:

  • HTTP requests with JavaScript payloads in 'id' parameter
  • Unusual outbound connections from WordPress server after page views

SIEM Query:

source="wordpress" AND (http_uri="*mwai_chatbot*" OR http_params="*<script>*")

🔗 References

📤 Share & Export