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Linux Distros Unpatched Vulnerability : CVE-2026-31802

high Nessus Plugin ID 301684

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Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

 - node-tar is a full-featured Tar for Node.js. Prior to version 7.5.11, tar (npm) can be tricked into creating a symlink that points outside the extraction directory by using a drive-relative symlink target such as C:../../../target.txt, which enables file overwrite outside cwd during normal tar.x() extraction.
 This vulnerability is fixed in 7.5.11. (CVE-2026-31802)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

See Also

https://access.redhat.com/security/cve/cve-2026-31802

https://ubuntu.com/security/CVE-2026-31802

Plugin Details

Severity: High

ID: 301684

File Name: unpatched_CVE_2026_31802.nasl

Version: 1.16

Type: Local

Agent: unix

Family: Misc.

Published: 3/10/2026

Updated: 5/11/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5.6

Temporal Score: 5

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

CVSS Score Source: CVE-2026-31802

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 5.2

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

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

CVSS v4

Risk Factor: High

Base Score: 8.2

Threat Score: 6.9

Threat Vector: CVSS:4.0/E:P

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

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:sgx-common, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:redhat:enterprise_linux:sgx-pccs-admin, p-cpe:/a:redhat:enterprise_linux:sgx-pckid-tool, cpe:/o:canonical:ubuntu_linux:26.04, p-cpe:/a:redhat:enterprise_linux:sgx-libs, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, cpe:/o:redhat:enterprise_linux:10, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:25.10, p-cpe:/a:redhat:enterprise_linux:sgx-pccs, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:canonical:ubuntu_linux:node-tar, p-cpe:/a:redhat:enterprise_linux:tdx-qgs, p-cpe:/a:redhat:enterprise_linux:sgx-mpa, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:14.04:-:lts

Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 3/9/2026

Reference Information

CVE: CVE-2026-31802