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HIGHCVE-2026-33870Published Modified CNA GitHub_M

CVE-2026-33870: Netty: HTTP Request Smuggling via Chunked Extension Quoted-String Parsing

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.

Metrics

CVSS v3.1
7.5
Severity
HIGH
Fixed in
—
Affected Products
1
Affected packages
  • netty / netty
    < 4.1.132.Final · >= 4.2.0.Alpha1, < 4.2.10.Final
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
References