CVE-2026-42585: Netty vulnerable to HTTP Request Smuggling due to malformed Transfer-Encoding

May 7, 2026 (updated May 14, 2026)

Netty incorrectly parses malformed Transfer-Encoding, enabling request smuggling attacks.

References

datatracker.ietf.org/doc/html/rfc9112
github.com/advisories/GHSA-38f8-5428-x5cv
github.com/netty/netty/security/advisories/GHSA-38f8-5428-x5cv
nvd.nist.gov/vuln/detail/CVE-2026-42585

Code Behaviors & Features

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