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Insufficient data authenticity validation In io.netty:netty-resolver-dns

Description

Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, Netty's DnsResolveContext fails to validate the origin (bailiwick) of CNAME records in DNS responses. Versions 4.1.135.Final and 4.2.15.Final patch the issue.

Mitigation

Update Impact

Minimal update. May introduce new vulnerabilities or breaking changes.

Ecosystem
Component
Affected version
Patched versions

Aliases

1. CVE-2026-456742. NVD-2026-456743. OSV-2026-456744. OSV-DEBIAN-2026-456745. GHSA-676x-f7gg-47vc6. GCVE-2026-456747. access.redhat.com8. access.redhat.com9. access.redhat.com10. access.redhat.com11. access.redhat.com12. access.redhat.com13. ACCESS-CVE-2026-4567414. SECURITY-cve-2026-45674.json15. SECURITY-TRACKER-CVE-2026-45674

References

1. https://github.com/netty/netty/security/advisories/GHSA-676x-f7gg-47vc2. https://bugzilla.redhat.com/show_bug.cgi?id=24884003. https://github.com/netty/netty/releases/tag/netty-4.1.135.Final4. https://github.com/netty/netty/releases/tag/netty-4.2.15.Final

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