Detections
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Echo: xz-utils: security update to 5.8.1-1+e1

medium Tenable Cloud Security Plugin ID 461216

Description

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

 - XZ Utils provide a general-purpose data-compression library plus command-line tools. Prior to version
 5.8.3, if lzma_index_decoder() was used to decode an Index that contained no Records, the resulting
 lzma_index was left in a state where where a subsequent lzma_index_append() would allocate too little
 memory, and a buffer overflow would occur. This issue has been patched in version 5.8.3. (CVE-2026-34743)

Solution

Update the xz-utils library and its related packages to version 5.8.1-1+e1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-34743

Plugin Details

Severity: Medium

ID: 461216

Version: Revision 1.2

Type: Local

Published: 10/2/2026

Updated: 10/5/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 1.2

Percentile: 0.01

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2026-34743

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

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:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 4/1/2026

Vulnerability Publication Date: 4/2/2026

Reference Information

CVE: CVE-2026-34743