Detections
Analytics

Alpine: multiple zlib packages: security update to 1.3.2-r0

medium Tenable Self-Hosted Container Security Plugin ID 438446

Description

There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

 - zlib versions up to and including 1.3.1.2 include a global buffer overflow in the untgz utility located
 under contrib/untgz. The vulnerability is limited to the standalone demonstration utility and does not
 affect the core zlib compression library. The flaw occurs when a user executes the untgz command with an
 excessively long archive name supplied via the command line, leading to an out-of-bounds write in a fixed-
 size global buffer. (CVE-2026-22184)

 - zlib before 1.3.2 allows CPU consumption via crc32_combine64 and crc32_combine_gen64 because x2nmodp can
 do right shifts within a loop that has no termination condition. (CVE-2026-27171)

See Also

https://security.alpinelinux.org/vuln/CVE-2026-22184

https://security.alpinelinux.org/vuln/CVE-2026-27171

Plugin Details

Severity: Medium

ID: 438446

Version: Revision 1.3

Type: Local

Published: 3/6/2026

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.03

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

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

CVSS Score Source: CVE-2026-22184

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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

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

CVSS v4

Risk Factor: Medium

Base Score: 4.6

Threat Score: 1.8

Threat Vector: CVSS:4.0/E:P

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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 1/7/2026

Reference Information

CVE: CVE-2026-22184, CVE-2026-27171