Live Helper Chat Cross-site Scripting

Cross-site Scripting (XSS) in GitHub repository livehelperchat/livehelperchat prior to 3.99v. The attacker can execute malicious JavaScript on the application. (2022-04-29, CVE-2022-1530)

XSS in livehelperchat in GitHub repository livehelperchat/livehelperchat prior to 3.97. This vulnerability has the potential to deface websites, result in compromised user accounts, and can run malicious code on web pages, which can lead to a compromise of the user’s device. (2022-04-06, CVE-2022-1234)

Cross-site Scripting (XSS) - Stored in Packagist remdex/livehelperchat prior to 3.93v. (2022-02-16, CVE-2022-0612)

Cross-site Scripting (XSS) - Stored in Packagist remdex/livehelperchat prior to 3.93v. (2022-02-06, CVE-2022-0502)

Cross-site Scripting (XSS) - Stored in Packagist remdex/livehelperchat prior to 3.93v. (2022-01-28, CVE-2022-0395)

Cross-site Scripting (XSS) - Stored in Packagist remdex/livehelperchat prior to 3.93v. (2022-01-28, CVE-2022-0394)

Cross-site Scripting (XSS) - Stored in Packagist remdex/livehelperchat prior to 3.93v. (2022-01-26, CVE-2022-0374)

Cross-site Scripting (XSS) - Stored in Packagist remdex/livehelperchat prior to 3.93v. (2022-01-26, CVE-2022-0375)

livehelperchat is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (2021-12-29, CVE-2021-4175)

livehelperchat is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (2021-12-29, CVE-2021-4176)

livehelperchat is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (2021-12-28, CVE-2021-4179)

livehelperchat is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (2021-12-26, CVE-2021-4169)

livehelperchat is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (2021-12-17, CVE-2021-4132)

livehelperchat is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (2021-12-08, CVE-2021-4050)

Live Helper Chat before 3.44v allows reflected XSS via the setsettingajax PATH_INFO. (2020-10-02, CVE-2020-26135)

Live Helper Chat before 3.44v allows stored XSS in chat messages with an operator via BBCode. (2020-10-02, CVE-2020-26134)

Cross site scripting is an attack where a web page executes code that is injected by an adversary. It usually appears, when users input is presented. This attack can be used to impersonate a user, take over control of the session, or even steal API keys.

The attack can be executed e.g. when you application injects the request parameter directly into the HTML code of the page returned to the user:

https://server.com/confirmation?message=Transaction+Complete

what results in:

<span>Confirmation: Transaction Complete</span>

In that case the message can be modified to become a valid Javascript code, e.g.:

https://server.com/confirmation?message=<script>dangerous javascript code here</script>

and it will be executed locally by the user's browser with full access to the user's personal application/browser data:

<span>Confirmation: <script>dangerous javascript code here</script></span>