https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-10-04T14:08:42.655989+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/cve-2026-59898 CVE-2026-59898 — Netty: WebSockets V07/V08 handshaker missing Connection/Upgrade validation 2026-10-04T14:08:42.905521+00:00

Affected: netty

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, ab 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. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.