ByteOS Network

NVD Vulnerability Details :

CVE-2026-56816

Awaiting Analysis

Source-security-advisories@github.com

Published At-21 Jul, 2026 | 22:17

Updated At-22 Jul, 2026 | 20:35

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.

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Metrics

Type	Version	Base score	Base severity	Vector
Secondary	3.1	7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
			N/A

Type: Secondary

Version: 3.1

Base score: 7.5

Base severity: HIGH

Vector:

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

Type: N/A

Version:

Base score:

Base severity: N/A

Vector:

Weaknesses

CWE ID	Type	Source
CWE-400	Secondary	security-advisories@github.com

CWE ID: CWE-400

Type: Secondary

Source: security-advisories@github.com

References

Hyperlink	Source	Resource
https://github.com/netty/netty/commit/5b68c61f37aa4a3045cba624cbea239655c9003b	security-advisories@github.com	N/A
https://github.com/netty/netty/releases/tag/netty-4.2.16.Final	security-advisories@github.com	N/A
https://github.com/netty/netty/security/advisories/GHSA-hpcc-26xq-25fv	security-advisories@github.com	N/A