ID:12034 - Exploit for Inconsistent interpretation of HTTP requests in ASP.NET Core and Visual Studio - CVE-2025-55315

Link to public exploit:

Vulnerability description

The vulnerability allows a remote attacker to perform HTTP request smuggling attacks.

The vulnerability exists due to improper validation of HTTP requests in ASP.NET. A remote user can send a specially crafted HTTP request to the server and smuggle arbitrary HTTP headers.

Successful exploitation of vulnerability may allow an attacker to poison HTTP cache and perform phishing attacks.

Remediation