CVE-2026-56853 — Apply ReadHeaderTimeout when doing unencrypted HTTP/2 check in net/http
When a server is configured to support unencrypted HTTP/2, it reads a few bytes from each new connection to see if they contain the HTTP/2 client preface. ReadHeaderTimeout is u…
Published: 2026-08-13 · CVSS: 7.5 · CVSS 3.1
When a server is configured to support unencrypted HTTP/2, it reads a few bytes from each new connection to see if they contain the HTTP/2 client preface. ReadHeaderTimeout is unexpectedly not being applied when doing this.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7