Detections
Analytics

Echo: io.netty:netty-codec-haproxy: security update to 4.1.135.Final

high Tenable Self-Hosted Container Security Plugin ID 464731

Description

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

 - Netty is a network application framework for development of protocol servers and clients. In netty-codec-
 haproxy prior to versions 4.1.135.Final and 4.2.15.Final, when decoding a PP2_TYPE_SSL TLV,
 HAProxyMessage.readNextTLV() first calls `header.retainedSlice(header.readerIndex(), length)` and only
 then reads the 1-byte client field and 4-byte verify field. If the attacker sets the TLV length below 5,
 the subsequent readByte/readInt throws IndexOutOfBoundsException. HAProxyMessageDecoder only catches
 HAProxyProtocolException around this call, so the IOOBE propagates and the retained slice on the pooled
 cumulation buffer is never released. Versions 4.1.135.Final and 4.2.15.Final patch the issue.
 (CVE-2026-44893)

Solution

Update the io.netty:netty-codec-haproxy library and its related packages to version 4.1.135.Final or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-44893

Plugin Details

Severity: High

ID: 464731

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: 23.72

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-44893

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:N/A:H

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 9/28/2026

Vulnerability Publication Date: 6/8/2026

Reference Information

CVE: CVE-2026-44893