code-projects Online Reviewer System btn_functions.php cross site scripting

Successful exploitation of CVE-2026-2224 enables an attacker to execute arbitrary JavaScript code within the context of a user's browser session on the Online Reviewer System. This can lead to various malicious actions, including session hijacking, phishing attacks, and defacement of the application. An attacker could steal sensitive user data, such as login credentials or personal information, and potentially gain unauthorized access to administrative functions. The public availability of the exploit significantly increases the risk of widespread exploitation.

Organizations utilizing the Online Reviewer System 1.0, particularly those with publicly accessible admin interfaces, are at significant risk. Shared hosting environments where multiple users share the same server resources are especially vulnerable, as a compromise of one user could potentially impact others.

• php / web:

grep -r 'firstname = $_POST' /var/www/html/

• generic web:

curl -I <target_url>/system/system/admins/manage/users/btn_functions.php?firstname=<script>alert(1)</script>

• generic web:

 grep -r 'firstname = $_POST' /var/log/apache2/access.log

1. 2026-02-09Disclosure

   disclosure

1. Reserviert2026-02-08
2. Veröffentlicht2026-02-09
3. Geändert2026-02-23
4. EPSS aktualisiert2026-03-23

While a patch is not yet available, several mitigation steps can be implemented to reduce the risk of exploitation. Input sanitization is paramount; rigorously validate and sanitize all user-supplied data, particularly the 'firstname' parameter in /system/system/admins/manage/users/btn_functions.php. Implementing a Web Application Firewall (WAF) with XSS protection rules can also effectively block malicious requests. Consider using a Content Security Policy (CSP) to restrict the sources from which scripts can be executed. Regularly review and update the application's codebase to identify and address potential vulnerabilities.