ExploitPublished 22 Jul 2025

LiveHelperChat 4.61 · Stored Cross Site Scripting (XSS) via Facebook Integration Page Name Field

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Severity

Medium

Rated by Threat Radar

Data as of 29 Sep 2025, 00:52 UTC

What to do

AI-suggested

European organizations should immediately review their use of LiveHelperChat 4.61 and consider the following specific mitigations: 1) Restrict access to the Facebook Integration Page Name field to trusted, authenticated users only, minimizing exposure. 2) Implement strict input validation and output encoding on all user-supplied data fields, particularly those integrated with third-party services like Facebook. 3) Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in the web application context. 4) Monitor logs and user activity for unusual input patterns or script injection attempts targeting the Facebook integration features. 5) If possible, upgrade to a newer, patched version of LiveHelperChat once available or apply community patches addressing this vulnerability. 6) Conduct regular security assessments and penetration testing focused on web application input handling and third-party integrations. 7) Educate administrators and operators about the risks of XSS and safe handling of integration configurations.

Description

LiveHelperChat 4.61 - Stored Cross Site Scripting (XSS) via Facebook Integration Page Name Field

Impact

For European organizations using LiveHelperChat 4.61, this stored XSS vulnerability poses a significant risk to the confidentiality and integrity of user sessions and data. Exploitation could allow attackers to hijack administrator or operator sessions, leading to unauthorized access to sensitive customer information or internal chat logs. It could also enable attackers to perform actions on behalf of legitimate users, potentially disrupting customer support operations or injecting misleading information. The availability impact is generally low but could be increased if attackers use the vulnerability to conduct further attacks such as defacement or malware delivery. Given the widespread use of LiveHelperChat in customer-facing roles, exploitation could damage organizational reputation and customer trust, especially under stringent European data protection regulations like GDPR. The lack of known exploits in the wild reduces immediate risk, but the presence of exploit code lowers the barrier for attackers to weaponize this vulnerability.

Indicators of compromise

Exploit source code

Exploit code for LiveHelperChat 4.61 - Stored Cross Site Scripting (XSS) via Facebook Integration Page Name Field1,447 characters

# Exploit Title: LiveHelperChat 4.61 - Stored Cross Site Scripting (XSS)
via Facebook Integration Page Name Field
# 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 : C…

References

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