CVE-2021-45822 Cross-site scripting in n/a

Medium 6.1 Published 16 Mar 2022 Updated 4 Aug 2024

Stored XSS in Xbtit allows attackers to execute malicious JavaScript via the chat data endpoint, potentially compromising user sessions.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2021-45822?

CVE-2021-45822 is a medium-severity cross-site scripting vulnerability in n/a, published on 16 Mar 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

A cross-site scripting vulnerability is present in Xbtit 3.1. The stored XSS vulnerability occurs because /ajaxchat/sendChatData.php does not properly validate the value of the "n" (POST) parameter. Through this vulnerability, an attacker is capable to execute malicious JavaScript code.

Weakness: CWE-79

Which versions are affected by CVE-2021-45822?

It affects 1 product.

Products include Btiteam Xbtit.

How do I fix CVE-2021-45822?

No fix has been published for CVE-2021-45822 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2021-45822 being exploited?

There is no known exploitation of CVE-2021-45822 in the wild and no public exploit code.

Sources

Also known as GHSA-x247-hw6m-c9w4.