Detections
Analytics

Echo: multiple io.netty:netty-codec packages: security update to 4.1.133.Final

high Tenable Cloud Security Plugin ID 463905

Description

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

 - Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and
 4.1.133.Final, Lz4FrameDecoder allocates a ByteBuf of size decompressedLength (up to 32 MB per block)
 before LZ4 runs. A peer only needs a 21-byte header plus compressedLength payload bytes - 22 bytes if
 compressedLength == 1 - to force that allocation. This vulnerability is fixed in 4.2.13.Final and
 4.1.133.Final. (CVE-2026-42583)

Solution

Update the io.netty:netty-codec library and its related packages to version 4.1.133.Final or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-42583

Plugin Details

Severity: High

ID: 463905

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/3/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.76

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

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

CVSS Score Source: CVE-2026-42583

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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:P/RL:O/RC:C

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/28/2026

Vulnerability Publication Date: 5/7/2026

Reference Information

CVE: CVE-2026-42583