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Netty: HTTP Request Smuggling via Chunked Extension Quoted-String Parsing

netty · CVE-2026-33870
0 news outlets0 CERTs and agencies0 researchers

What is it?

Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.132.Final and 4.2.10.Final, Netty incorrectly parses quoted strings in HTTP/1.1 chunked transfer encoding extension values, enabling request smuggling attacks. Versions 4.1.132.Final and 4.2.10.Final fix the issue.

Evidence

No coverage recorded yet.

Exploitation

  • Public proof of concept
  • Exploited in the wild
  • Listed as known exploited
CVSS
7.5
EPSS
0.7%
First seen
7 h ago
Status
corroborated

All netty vulnerabilities