CVE-2026-30559 - Vulnerability Analysis

Overview

SourceCodester Sales and Inventory System 1.0 contains a reflected XSS caused by unsanitized input in the "msg" parameter of add_sales.php, letting remote attackers inject arbitrary web scripts via crafted URL.

Severity & Score

Impact

Remote attackers can execute arbitrary scripts in users' browsers, potentially stealing session data or performing actions on behalf of users.

Mitigation

Update to the latest version with proper input sanitization.

References

• https://github.com/meifukun/Web-Security-PoCs/blob/main/Inventory-System/XSS-AddSales-msg.md

Related Resources

• Vulnerability Intelligence Dashboard
• Credential Scanner