Detections
Analytics

SCA: security update for io.netty:netty-codec-http3 (GHSA-hpcc-26xq-25fv)

high Tenable Cloud Security Plugin ID 445204

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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. (CVE-2026-56816)

Solution

Update the io.netty:netty-codec-http3 library and its related packages to version 4.2.16.Final or later.

See Also

https://github.com/advisories/GHSA-hpcc-26xq-25fv

Plugin Details

Severity: High

ID: 445204

Version: Revision 1.1

Type: Local

Family: SCA Checks

Published: 7/23/2026

Updated: 7/23/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.75

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-56816

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 7/22/2026

Vulnerability Publication Date: 7/21/2026

Reference Information

CVE: CVE-2026-56816

cwe: CWE-400