Detections
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Alpine: gzip: security update to 1.15-r0

low Tenable Cloud Security Plugin ID 478404

Description

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

 - GNU gzip contains a vulnerability in the gzexe utility related to insecure temporary file handling. When
 the mktemp utility is not available in the user’s PATH, gzexe falls back to constructing a temporary file
 path based solely on the process ID (PID). This predictable filename is created without exclusive access
 or existence checks. A local attacker can pre‑create the predicted temporary file path as a symbolic link
 pointing to an arbitrary file writable by the victim. When gzexe runs, it follows the symlink and
 overwrites the target file, resulting in a time‑of‑check to time‑of‑use (TOCTOU) condition that allows
 arbitrary file overwrite. This issue has been fixed in the commit 4e6f8b24ab823146ab8776f0b7fe486ab34d4269
 (CVE-2026-41991)

Solution

Update the gzip library and its related packages to version 1.15-r0 or later.

See Also

https://security.alpinelinux.org/vuln/CVE-2026-41991

Plugin Details

Severity: Low

ID: 478404

Version: Revision 1.1

Type: Local

Published: 11/5/2026

Updated: 11/5/2026

Supported Sensors: Agentless Assessment

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.73

CVSS v2

Risk Factor: Low

Base Score: 3.8

Temporal Score: 2.8

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

CVSS Score Source: CVE-2026-41991

CVSS v3

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 4.1

Vector: CVSS:3.0/AV:L/AC:H/PR:L/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: Low

Base Score: 2

Threat Score: 0.4

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 6/29/2026

Reference Information

CVE: CVE-2026-41991