GHSA-4mp9-239f-g9hg

Netty: WebSockets V07/V08 handshaker missing Connection/Upgrade validation

En bref

Publiée
Mise à jour
CVE
CVE-2026-59898
CVSS_V4
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

Description

## Summary An attacker can force WebSocket upgrade via the lax V07 (or V08) handshaker by sending `Sec-WebSocket-Version: 7` and omitting `Connection: Upgrade` / `Upgrade: websocket` headers, completing a protocol switch that a proxy would not recognize as an Upgrade request and enabling HTTP request smuggling / protocol-confusion attacks.

Paquets affectés

PaquetVersions
Maven · io.netty:netty-codec-httpintroduced 4.2.0.Final, fixed 4.2.16.Final
Maven · io.netty:netty-codec-httpintroduced 0, fixed 4.1.136.Final

Références

Sources

SourceLicence
OSV.devCC-BY 4.0 — GitHub Advisory Database