CVE-2019-20444

HTTP Request Smuggling in Netty

Description

HttpObjectDecoder.java in Netty before 4.1.44 allows an HTTP header that lacks a colon, which might be interpreted as a separate header with an incorrect syntax, or might be interpreted as an "invalid fold."

Patch Available

Fix available through Seal Security.  
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Fix without upgrading

Score

Severity

Ecosystem

Java

Publish Date

February 21, 2020

Modified Date

July 2, 2025

Score Vector

Affected Versions