CVE-2026-42579

Published May 13th, 2026

View on NVD ↗

CVSS v3

7.5

HIGH

CVSS v2

N/A

Affected

PROJECT

Description

Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Netty's DNS codec does not enforce RFC 1035 domain name constraints during either encoding or decoding. This creates a bidirectional attack surface: malicious DNS responses can exploit the decoder, and user-influenced hostnames can exploit the encoder. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.

netty/netty

Netty project - an event-driven asynchronous network application framework

GitHub

35K