Moole Vulnerability Database

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High

CVE-2026-42585

Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Netty incorrectly parses malformed Transfer-Encoding, enabling request smuggling attacks. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.

VectorNETWORK

PublishedMay 13, 2026, 19:17

Published Bysecurity-advisories@github.com

Base Score

Score7.5

Affected Versions

Package (Ecosystem)IntroducedFixedLimit

io.netty:netty-codec-http(Maven)4.2.0.Alpha14.2.13.FinalN/A

io.netty:netty-codec-http(Maven)04.1.133.FinalN/A

References

https://github.com/netty/netty/security/advisories/GHSA-38f8-5428-x5cv

Weakness Type

CWE-444

CVSS Metrics

Base Score

7.5

Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Base SeverityHigh

Version

3.1

Attack Vector (AV)

NETWORK