CVE-2025-43859: Request Smuggling Vulnerability in Python’s h11 HTTP Library 2 min read Vulnerability CVE-2025-43859: Request Smuggling Vulnerability in Python’s h11 HTTP Library Ddos April 27, 2025 A critical vulnerability tracked as CVE-2025-43859 has been disclosed in h11, a minimalist, I/O-agnostic HTTP/1.1 protocol library... Read More Read more about CVE-2025-43859: Request Smuggling Vulnerability in Python’s h11 HTTP Library