CVE-2026-44249

Published June 11th, 2026

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CVSS v3

8.1

HIGH

CVSS v2

N/A

Affected

PROJECT

Description

Netty is a network application framework for development of protocol servers and clients. In netty-handler prior to versions 4.1.135.Final and 4.2.15.Final, an attacker can bypass IPv6 subnet rules due to an incorrect masking operation in IpSubnetFilterRule.compareTo(). Valid public IP addresses can bypass the restrictions. Versions 4.1.135.Final and 4.2.15.Final patch the issue.

netty/netty

Netty project - an event-driven asynchronous network application framework

GitHub

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