SourceCodester Sales and Inventory System GET Parameter delete.php cross site scripting

The XSS vulnerability in Sales and Inventory System allows an attacker to inject arbitrary JavaScript code into the application's web pages. This can lead to various malicious outcomes, including session hijacking, defacement of the website, and redirection of users to phishing sites. An attacker could potentially steal sensitive user data, such as login credentials or financial information. Given the public availability of an exploit, the risk of exploitation is elevated, particularly for systems that haven't been patched. The impact extends to all users interacting with the vulnerable Sales and Inventory System, as any user visiting a page containing the injected script could be affected.

Organizations utilizing SourceCodester Sales and Inventory System, particularly those with limited security resources or outdated configurations, are at increased risk. Shared hosting environments where multiple users share the same server instance are also vulnerable, as a compromise of one user's account could potentially impact others.

• php / web:

curl -s -X POST 'http://your-sales-inventory-system/delete.php?id=<script>alert("XSS")</script>' | grep -i alert

• generic web:

curl -s 'http://your-sales-inventory-system/delete.php?id=<script>alert("XSS")</script>' | grep -i alert

• generic web:

 grep -i 'alert("XSS")' /var/log/apache2/access.log

1. 2026-04-08Disclosure

   disclosure

1. Reserviert2026-04-08
2. Veröffentlicht2026-04-08
3. Geändert2026-04-13
4. EPSS aktualisiert2026-04-16

The primary mitigation for CVE-2026-5810 is to upgrade to a patched version of SourceCodester Sales and Inventory System as soon as it becomes available. Until an upgrade is possible, consider implementing temporary workarounds. Input validation and sanitization on the ID parameter in /delete.php is crucial. Implement a Web Application Firewall (WAF) with rules to detect and block XSS attempts targeting this specific endpoint. Regularly review and update the WAF rules to ensure effectiveness. Carefully examine the code for other potential XSS vulnerabilities. After upgrade, confirm by attempting to access /delete.php with a known malicious payload to ensure the vulnerability is resolved.