CVE-2026-42585

Published: May 13, 2026Modified: Jun 17, 2026

7.5

Vector

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

Exploitability: 3.9 / Impact: 3.6

Source: NVD

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 (2)

Products: Netty: Netty

1 product

Configuration A

2 vulnerable

Vulnerable Software	Affected Versions
Netty Netty	Before 4.1.133
Netty Netty	From 4.2.0 to 4.2.13

Related CWEs

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

References (2)

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

Source: security-advisories@github.com

ExploitVendor Advisory

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

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

ExploitVendor Advisory

Timeline

No history available yet.