Vulnerability in Go Standard Library Net/http
CVE-2026-56853
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.
Affected products
- Go Standard Library Net/http — versions 0, 1.26.0-0, 1.27.0-0