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.

A blind SQL injection vulnerability exists in Xbtit 3.1 via the sid parameter in ajaxchat/getHistoryChatData.php file that is accessible by a registered user. As a result, a malicious user can extract sensitive data such as usernames and passwords and in some cases use this vulnerability in order to get a remote code execution on the remote web server.

An issue was discovered in BTITeam XBTIT 2.5.4. The "returnto" parameter of account_change.php is vulnerable to an open redirect, a different vulnerability than CVE-2018-15683.

The newsfeed (aka /index.php?page=viewnews) in BTITeam XBTIT 2.5.4 has stored XSS via the title of a news item. This is also exploitable via CSRF.

An issue was discovered in BTITeam XBTIT. The "returnto" parameter of the login page is vulnerable to an open redirect due to a lack of validation. If a user is already logged in when accessing the page, they will be instantly redirected.

An issue was discovered in BTITeam XBTIT 2.5.4. The "keywords" parameter in the search function available at /index.php?page=forums&action=search is vulnerable to reflected cross-site scripting.

An issue was discovered in BTITeam XBTIT 2.5.4. The "act" parameter in the sign-up page available at /index.php?page=signup is vulnerable to reflected cross-site scripting.

An issue was discovered in BTITeam XBTIT. Due to a lack of cross-site request forgery protection, it is possible to automate the action of sending private messages to users by luring an authenticated user to a web page that automatically submits a form on their behalf.

An issue was discovered in BTITeam XBTIT 2.5.4. news.php allows XSS via the id parameter.

An issue was discovered in BTITeam XBTIT. By using String.replace and eval, it is possible to bypass the includes/crk_protection.php anti-XSS mechanism that looks for a number of dangerous fingerprints.