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SCA: security update for io.netty:netty-codec-dns (GHSA-cm33-6792-r9fm)

critical Tenable Cloud Security Plugin ID 441366

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, Netty's DNS codec does not enforce RFC 1035 domain name constraints during either encoding
 or decoding. This creates a bidirectional attack surface: malicious DNS responses can exploit the decoder,
 and user-influenced hostnames can exploit the encoder. This vulnerability is fixed in 4.2.13.Final and
 4.1.133.Final. (CVE-2026-42579)

Solution

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

See Also

https://github.com/advisories/GHSA-cm33-6792-r9fm

Plugin Details

Severity: Critical

ID: 441366

Version: Revision 1.5

Type: Local

Family: SCA Checks

Published: 5/7/2026

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.62

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7.4

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

CVSS Score Source: CVE-2026-42579

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 8.2

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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: 5/7/2026

Vulnerability Publication Date: 5/7/2026

Reference Information

CVE: CVE-2026-42579