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SCA: security update for io.netty:netty-codec-http (GHSA-xxqh-mfjm-7mv9)

critical Tenable Cloud Security Plugin ID 441344

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, HttpObjectDecoder strips a conflicting Content-Length header when a request carries both
 Transfer-Encoding: chunked and Content-Length, but only for HTTP/1.1 messages. The guard is absent for
 HTTP/1.0. An attacker that sends an HTTP/1.0 request with both headers causes Netty to decode the body as
 chunked while leaving Content-Length intact in the forwarded HttpMessage. Any downstream proxy or handler
 that trusts Content-Length over Transfer-Encoding will disagree on message boundaries, enabling request
 smuggling. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final. (CVE-2026-42581)

Solution

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

See Also

https://github.com/advisories/GHSA-xxqh-mfjm-7mv9

Plugin Details

Severity: Critical

ID: 441344

Version: Revision 1.7

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: 4.9

Percentile: 57.97

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

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

CVSS Score Source: CVE-2026-42581

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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-2026-42581

cwe: CWE-444