CVEvulnerability

CVE-2026-56816

7.5 HIGH Published 2026-07-21 Modified 2026-08-07 Official page ↗
Status
Analyzed
Published
2026-07-21
Last modified
2026-08-07
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-400

Description

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 configurations

• netty netty (>= 4.2.2 < 4.2.16)

Related

Weakness · CWE (1)

  • CWE-400 Uncontrolled Resource Consumption weakness

References