Veille CVE

Vendredi 23 octobre 2026

1 CVE

Critique 0 Élevée 0 Moyenne 1 Faible 0 Non évaluée 0 Exploitées (KEV) Tri : plus récentes « python-hyper h2 » ✕
  1. CVE-2026-71554 5.3 Moyenne

    python-hyper h2

    h2 is a pure-Python implementation of a HTTP/2 protocol stack. Versions up to and including 4.4.0 accept request header blocks containing more than one Host header, and forward every Host header to the consuming application. Where the consumer downgrades HTTP/2 to HTTP/1.1, the resulting request carries two Host header lines, providing a request smuggling primitive. This issue is fixed in version 4.4.1.