LiveHelperChat <=4.61 - Stored Cross Site Scripting (XSS) via Personal Canned Messages # Date: 09/06/2025# Exploit Title: LiveHelperChat <=4.61 - Stored Cross Site Scripting (XSS) via Personal Canned Messages
# Date: 09/06/2025
# Exploit Author: Manojkumar J (TheWhiteEvil)
# Linkedin: https://www.linkedin.com/in/manojkumar-j-7ba35b202/
# Vendor Homepage: https://github.com/LiveHelperChat/livehelperchat/
# Software Link:
https://github.com/LiveHelperChat/livehelperchat/
# Version: <=4.61
# Patched Version: 4.61
# Category: Web Application
# Tested on: Mac OS Sequoia 15.5, Firefox
# CVE : CVE-2025-51400
# Exploit link: https://github.com/Thewhiteevil/CVE-2025-51400
# Reference: https://livehelperchat.com/4.61v-security-fixes-724a.html
https://github.com/LiveHelperChat/livehelperchat/pull/2228/commits/2056503ad96e04467ec9af8d827109b9b9b46223
A stored cross-site scripting (XSS) vulnerability in Live Helper Chat version ≤ 4.61 allows attackers to execute arbitrary JavaScript by injecting a crafted payload into the Personal Canned Messages. When an admin or operator user views the message, and tries to send canned messages the stored javascript executes in their browser context.
## Reproduction Steps:
1. Log in as an operator.
2. Navigate to your Personal Canned Messages.
3. Create new personal canned message, enter the following payload:
```"><img src="x" onerror="prompt(1);">```
4. Save the changes.
5. Try to use the personal canned message, the cross site scripting (xss) will execute.
<img width="1361" height="713" alt="image" src="https://github.com/user-attachments/assets/76b9684e-6e9a-4155-826c-49a7217aa585" />
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