Medium severity6.5GHSA Advisory· Published May 13, 2026· Updated May 15, 2026

CVE-2026-42585

Description

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.

Affected products

Netty/NettyGHSA
Range: <= 4.1.132.Final

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

github.com/advisories/GHSA-38f8-5428-x5cvghsaADVISORY
datatracker.ietf.org/doc/html/rfc9112ghsa
github.com/netty/netty/security/advisories/GHSA-38f8-5428-x5cvnvd
nvd.nist.gov/vuln/detail/CVE-2026-42585ghsa

News mentions

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cvss	0.423
epss	0.000
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ransomware	0.000