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-2025-51398

Exploit link: https://github.com/Thewhiteevil/CVE-2025-51398

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 Facebook page integration Name Field. The payload is stored and executed when higher-privileged users (e.g., administrators) access or edit the integration settings, resulting in stored Cross Site Scripting (XSS).

Reproduction Steps:

1. Log in as an operator.

2. Navigate to your Facebook page integration.

3. Create new Facebook page integration, enter the following payload in the Facebook page integration Name Field:

4. "><img src="https://raw.githubusercontent.com/thewhiteevil/cve-2025-51398/main/x" onerror="prompt(1);">

5. Save the changes.

6. The payload is stored and executed when higher-privileged users (e.g., operator or administrators) access or edit the Facebook page integration, resulting in stored Cross Site Scripting (XSS).