Detections
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SCA: security update for io.netty:netty-codec-http (GHSA-4mp9-239f-g9hg)

medium Tenable Self-Hosted Container Security Plugin ID 445174

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 versions 4.1.136.Final and
 4.2.16.Final, ab attacker can force WebSocket upgrade via the lax V07 (or V08) handshaker by sending `Sec-
 WebSocket-Version: 7` and omitting `Connection: Upgrade` / `Upgrade: websocket` headers, completing a
 protocol switch that a proxy would not recognize as an Upgrade request and enabling HTTP request smuggling
 / protocol-confusion attacks. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.
 (CVE-2026-59898)

Solution

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

See Also

https://github.com/advisories/GHSA-4mp9-239f-g9hg

Plugin Details

Severity: Medium

ID: 445174

Version: Revision 1.6

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: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-59898

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:H/A:N

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

CVSS v4

Risk Factor: Medium

Base Score: 6.3

Threat Score: 1.7

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 7/22/2026

Vulnerability Publication Date: 7/22/2026

Reference Information

CVE: CVE-2026-59898

cwe: CWE-444