CVE-2025-0741
📋 TL;DR
An authenticated attacker can write messages into other users' chat sessions by manipulating the 'chat_id' parameter in EmbedAI's chat functionality. This affects all users of EmbedAI version 2.1 and earlier who have authenticated access to the system.
💻 Affected Systems
- EmbedAI
📦 What is this software?
Embedai by Thesamur
⚠️ Risk & Real-World Impact
Worst Case
Attackers could impersonate other users, inject malicious content, disrupt legitimate conversations, or conduct social engineering attacks through unauthorized message injection.
Likely Case
Unauthorized message injection leading to confusion, misinformation, or minor disruption of chat functionality among users.
If Mitigated
Proper access controls would prevent unauthorized chat_id manipulation, limiting users to their own chat sessions only.
🎯 Exploit Status
Requires authenticated access but exploitation is straightforward via parameter manipulation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 2.2 or later
Vendor Advisory: https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-embedai
Restart Required: Yes
Instructions:
1. Download EmbedAI version 2.2 or later from official sources. 2. Backup current installation. 3. Apply the update following vendor instructions. 4. Restart the EmbedAI service.
🔧 Temporary Workarounds
Implement server-side chat_id validation
allAdd server-side validation to ensure users can only send messages to their own chat sessions
Disable chat functionality
allTemporarily disable the vulnerable chat endpoint until patching is possible
🧯 If You Can't Patch
- Implement strict access controls at the application layer to validate user-chat ownership
- Monitor chat logs for unauthorized message injection attempts and implement rate limiting
🔍 How to Verify
Check if Vulnerable:
Test if authenticated users can send messages to other users' chat sessions by manipulating the chat_id parameter in POST requests to /embedai/chats/send_messageCheck Version:
Check EmbedAI version in admin panel or configuration filesVerify Fix Applied:
After patching, verify that chat_id parameter manipulation no longer allows sending messages to unauthorized chat sessions📡 Detection & Monitoring
Log Indicators:
- Multiple chat_id values from single user session
- Rapid chat_id parameter changes in POST requests
- Messages appearing in chats from unauthorized users
Network Indicators:
- POST requests to /embedai/chats/send_message with manipulated chat_id parameters
- Unusual chat message patterns
SIEM Query:
source="web_logs" AND uri_path="/embedai/chats/send_message" AND user_id!=chat_id