Is io.netty:netty-codec-dns affected by CVE-2026-42579?

Maven io.netty:netty-codec-dns is affected in >=4.2.0.Alpha1 <4.2.13.Final, <4.1.133.Final.

Is CVE-2026-42579 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.4%.

high

CVE-2026-42579

Q: Is CVE-2026-42579 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.4%.

Maven · io.netty:netty-codec-dns

Summary

Netty has a DNS Codec Input Validation Bypass (Encoder + Decoder)

Severity: high
EPSS: 0.4% (p33)
Also known as: GHSA-cm33-6792-r9fm
Published: 2026-05-07

References

https://github.com/netty/netty/security/advisories/GHSA-cm33-6792-r9fm
https://nvd.nist.gov/vuln/detail/CVE-2026-42579
https://github.com/netty/netty

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Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.