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CVE-2026-44249

HIGH
8.1
CVSS Severity Score
EPSS Score0.0030%
EPSS Percentile35.77th
PublishedJun 11, 2026
Last ModifiedJun 12, 2026

Vulnerability 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.

Affected Platforms (CPE)

No CPE configurations currently published for this record.

References & Advisories

🔗 https://github.com/netty/netty/releases/tag/netty-4.1.135.Final
🔗 https://github.com/netty/netty/releases/tag/netty-4.2.15.Final
🔗 https://github.com/netty/netty/security/advisories/GHSA-3qp7-7mw8-wx86

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