GO-2026-6611

Excessive CPU consumption from repeated initial window changes in net/http

En bref

Publiée: 2026-10-08 22:31 UTC
Mise à jour: 2026-10-16 09:55 UTC
CVE: CVE-2026-78669
Alias: BIT-golang-2026-78669

Description

A malicious HTTP/2 peer can cause excessive CPU consumption in the client or server by opening a large number of streams and then sending many small SETTINGS frames containing SETTINGS_INITIAL_WINDOW_SIZE values.

Paquets affectés

Paquet	Versions
Go · stdlib	introduced 0, fixed 1.26.9
Go · stdlib	introduced 1.27.0-0, fixed 1.27.2
Go · golang.org/x/net	introduced 0, fixed 0.60.0

Références

https://go.dev/cl/847186 FIX
https://go.dev/cl/847308 FIX
https://go.dev/issue/81742 REPORT
https://groups.google.com/g/golang-announce/c/U2fTuyDJznI WEB
https://groups.google.com/g/golang-announce/c/ZPwCyRUuGBs WEB

Sources

Source	Licence
OSV.dev	CC-BY 4.0 — Go Vulnerability Database