CVE-2026-55833 (GCVE-0-2026-55833)
Vulnerability from cvelistv5
Published
2026-07-20 23:18
Modified
2026-07-21 13:03
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-400 - Uncontrolled Resource Consumption
Summary
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.
References
Impacted products
Vendor Product Version
netty netty Version: >= 4.2.0.Final, < 4.2.16.Final
Version: >= 4.1.0.Final, < 4.1.136.Final
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