Is io.netty:netty-codec-http affected by CVE-2026-50020?

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

Is CVE-2026-50020 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.2%.

medium

CVE-2026-50020

Q: Is CVE-2026-50020 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.2%.

Maven · io.netty:netty-codec-http

Summary

Netty: HttpObjectDecoder skips arbitrary initial control characters when only initial CRLF characters are permitted

Severity: medium
EPSS: 0.2% (p14)
Also known as: GHSA-hvcg-qmg6-jm4c
Published: 2026-06-15

References

Related advisories

CVE-2026-56745 — high · Maven/io.netty:netty-codec-http
CVE-2026-55833 — high · Maven/io.netty:netty-codec-http
CVE-2026-55831 — high · Maven/io.netty:netty-codec-http
CVE-2026-42587 — high · Maven/io.netty:netty-codec-http
CVE-2026-42584 — high · Maven/io.netty:netty-codec-http
CVE-2026-33870 — high · Maven/io.netty:netty-codec-http
CVE-2026-59903 — medium · Maven/io.netty:netty-codec-http
CVE-2026-59921 — medium · Maven/io.netty:netty-codec-http

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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.