Detections
Analytics

Alpine: multiple xz packages: security update to 5.8.3-r0

medium Tenable Cloud Security Plugin ID 440962

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 library and its related packages to version 5.8.3-r0 or later.

See Also

https://security.alpinelinux.org/vuln/CVE-2026-34743

Plugin Details

Severity: Medium

ID: 440962

Version: Revision 1.4

Type: Local

Published: 4/29/2026

Updated: 6/30/2026

Supported Sensors: Agentless Assessment, 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

Vulnerability Publication Date: 4/2/2026

Reference Information

CVE: CVE-2026-34743