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Linux Distros Unpatched Vulnerability : CVE-2026-39983

high Nessus Plugin ID 306131

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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.

 - basic-ftp is an FTP client for Node.js. Prior to 5.2.1, basic-ftp allows FTP command injection via CRLF sequences (\r\n) in file path parameters passed to high-level path APIs such as cd(), remove(), rename(), uploadFrom(), downloadTo(), list(), and removeDir(). The library's protectWhitespace() helper only handles leading spaces and returns other paths unchanged, while FtpContext.send() writes the resulting command string directly to the control socket with \r\n appended. This lets attacker-controlled path strings split one intended FTP command into multiple commands. This vulnerability is fixed in 5.2.1. (CVE-2026-39983)

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://security-tracker.debian.org/tracker/CVE-2026-39983

https://ubuntu.com/security/CVE-2026-39983

Plugin Details

Severity: High

ID: 306131

File Name: unpatched_CVE_2026_39983.nasl

Version: 1.5

Type: Local

Agent: unix

Family: Misc.

Published: 4/13/2026

Updated: 4/29/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.5

CVSS v2

Risk Factor: High

Base Score: 9.7

Temporal Score: 8.7

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

CVSS Score Source: CVE-2026-39983

CVSS v3

Risk Factor: High

Base Score: 8.6

Temporal Score: 8.1

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:25.10, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, cpe:/o:canonical:ubuntu_linux:26.04, p-cpe:/a:canonical:ubuntu_linux:node-proxy-agents, p-cpe:/a:debian:debian_linux:node-proxy-agents, cpe:/o:debian:debian_linux:13.0

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: 4/8/2026

Reference Information

CVE: CVE-2026-39983