7.5

CVE-2026-56816

Exploit

Netty: Memory Exhaustion via HTTP/3 Reserved Frame Types

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Netty ≫ Netty Version >= 4.2.2 < 4.2.16
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.52% 0.414
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security-advisories@github.com 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-400 Uncontrolled Resource Consumption

The product does not properly control the allocation and maintenance of a limited resource.

https://github.com/netty/netty/commit/5b68c61f37aa4a3045cba624cbea239655c9003b
Patch
https://github.com/netty/netty/releases/tag/netty-4.2.16.Final
Release Notes
https://github.com/netty/netty/security/advisories/GHSA-hpcc-26xq-25fv
Vendor Advisory
Exploit