CVE-2026-42585 MEDIUM

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

Vendor Netty
Product netty
Weakness CWE-444
Published May 13, 2026
Last update May 15, 2026
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

May 13, 2026 CVE published
May 15, 2026 Record updated