Feed/CVE-2026-55833
CVE-2026-55833HIGHCVSS 7.5

CVE-2026-55833

Published Jul 21, 2026·Updated Jul 22, 2026

NVD Description

Netty is a network application framework for development of protocol servers and clients. Prior to 4.1.136.Final and 4.2.16.Final, Netty SPDY header decoding continues inflating zlib-compressed header blocks after the raw header parser has exceeded `maxHeaderSize` and marked the frame truncated in `SpdyFrameCodec`, allowing a remote peer to send a small compressed `HEADERS` block that expands into much larger raw header data and causes compression-amplified CPU and allocation churn. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.

Affected Packages (1)

io.netty:netty-codec-httpMAVEN
From 4.2.0.Final
Fixed in = 4.2.15.Final

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

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