Is io.netty:netty-codec-http2 affected by CVE-2025-55163?

Maven io.netty:netty-codec-http2 is affected in >=4.2.0.Alpha1 <4.2.4.Final, <4.1.124.Final.

Is CVE-2025-55163 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.9%.

high

CVE-2025-55163

Q: Is CVE-2025-55163 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.9%.

Maven · io.netty:netty-codec-http2 • Maven · io.grpc:grpc-netty-shaded

Summary

Netty affected by MadeYouReset HTTP/2 DDoS vulnerability

Severity: high
EPSS: 0.9% (p57)
Also known as: GHSA-prj3-ccx8-p6x4#io.grpc:grpc-netty-shaded, GHSA-prj3-ccx8-p6x4#io.netty:netty-codec-http2
Published: 2025-08-13

References

Related advisories

CVE-2026-42587 — high · Maven/io.netty:netty-codec-http2
CVE-2026-33871 — high · Maven/io.netty:netty-codec-http2
CVE-2026-50560 — medium · Maven/io.netty:netty-codec-http2
CVE-2026-48043 — medium · Maven/io.netty:netty-codec-http2
CVE-2026-47244 — medium · Maven/io.netty:netty-codec-http2

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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.