Detections
Analytics

SCA: security update for io.netty:netty-codec-haproxy (GHSA-wh89-7897-x99h)

medium Tenable Cloud Security Plugin ID 445202

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. In versions prior to 4.1.136.Final
 and 4.2.16.Final, Netty's HAProxy encoder ( HAProxyMessageEncoder ) writes AF_UNIX source and destination
 socket addresses into the HAProxy V1 text protocol without validating them for CRLF characters, so an
 attacker who controls an AF_UNIX address can inject \r\n sequences and split the single PROXY header into
 multiple lines. This is possible because the V1 protocol uses CRLF as its line terminator and, unlike
 IPv4/IPv6 addresses whose format checks implicitly reject CRLF, AF_UNIX addresses are only validated for
 length (up to 108 bytes), allowing a forged second PROXY header line that spoofs the client
 source/destination IP to a downstream server or load balancer. The issue is fixed in versions
 4.1.136.Final and 4.2.16.Final. (CVE-2026-59919)

Solution

Update the io.netty:netty-codec-haproxy library and its related packages to version 4.1.136.Final or later.

See Also

https://github.com/advisories/GHSA-wh89-7897-x99h

Plugin Details

Severity: Medium

ID: 445202

Version: Revision 1.4

Type: Local

Family: SCA Checks

Published: 7/23/2026

Updated: 8/7/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.75

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.6

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

CVSS Score Source: CVE-2026-59919

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 5

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

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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/22/2026

Vulnerability Publication Date: 7/22/2026

Reference Information

CVE: CVE-2026-59919

cwe: CWE-93