ID:11820 - Exploit for Inconsistent interpretation of HTTP requests in Node.js - CVE-2025-23167

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/1 headers in llhttp. A remote attacker 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