ANCHORE-2026-42579

ANCHORE-2026-42579 PUBLISHED

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.

Affected Products

Vendor	Product	Versions
netty	netty	4.2.0.alpha1, 0

Timeline

May 13, 2026 CVE Published

References

https://github.com/netty/netty/security/advisories/GHSA-cm33-6792-r9fm url

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