Is io.netty:netty-handler affected by CVE-2026-44249?

Maven io.netty:netty-handler is affected in >=4.2.0.Final <4.2.15.Final, <4.1.135.Final.

Is CVE-2026-44249 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 1.0%.

high

CVE-2026-44249

Q: Is CVE-2026-44249 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 1.0%.

Maven · io.netty:netty-handler

Summary

Netty has an IPv6 Subnet Filter Bypass via Incorrect Comparator Masking

Severity: high
EPSS: 1.0% (p62)
Also known as: GHSA-3qp7-7mw8-wx86
Published: 2026-06-08

References

https://github.com/netty/netty/security/advisories/GHSA-3qp7-7mw8-wx86
https://nvd.nist.gov/vuln/detail/CVE-2026-44249
https://github.com/netty/netty

Related advisories

CVE-2026-75595 — critical · Maven/io.netty:netty-handler
CVE-2026-50010 — high · Maven/io.netty:netty-handler
CVE-2026-45416 — high · Maven/io.netty:netty-handler
CVE-2025-24970 — high · Maven/io.netty:netty-handler
CVE-2026-75596 — medium · Maven/io.netty:netty-handler

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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.