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CVE-2026-56816

Netty: Memory Exhaustion via HTTP/3 Reserved Frame Types PUBLISHED

Description (CNA)

Netty is a network application framework for development of protocol servers and clients. Prior to 4.2.16.Final, Netty's `Http3FrameCodec` buffers incoming data for HTTP/3 reserved frame types up to the wire-specified payload length without limits; `decodeFrame` trusts `payLoadLength`, allowing an attacker to open multiple QUIC streams and send reserved frames with very large payload lengths to cause memory exhaustion and denial of service. This issue is fixed in version 4.2.16.Final.

Affected (CNA)

Vendor / productVersions
netty / nettyaffected < 4.2.16.Final

CWE

CWE-400

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.