Cross-site Scripting (XSS) - Reflected in livehelperchat/livehelperchat

Valid

Reported on

Dec 25th 2021


Description

The htmlspecialchars function does not escape special characters like single quote, and the $prefix parameter can lead to reflected XSS

Proof of Concept

https://demo.livehelperchat.com/site_admin/user/avatarbuilder/1?_=1640314779051&prefix=123%27);})});%20alert(%27xss%27);//

Impact

XSS can have huge implications for a web application and its users. User accounts can be hijacked, change the html screen and insult the organization. Credentials could be stolen, sensitive data could be exfiltrated, and lastly, access to your client computers can be obtained.

We are processing your report and will contact the livehelperchat team within 24 hours. a year ago
Remigijus Kiminas validated this vulnerability a year ago
laladee has been awarded the disclosure bounty
The fix bounty is now up for grabs
Remigijus Kiminas marked this as fixed with commit 8f6dda a year ago
The fix bounty has been dropped
This vulnerability will not receive a CVE
Remigijus
a year ago

The relevant commit did not fix the exact report. But further ones fixed and $prefix variable issues.

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