CVE-2026-39983

HIGH SEVERITY

CVSS Score & Metrics

Base Score

8.6 / 10

Vector String

                                        CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L                                    

Vulnerability Description

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.

Vulnerability Details

Published Date

April 08, 2026

Last Modified

April 14, 2026

CWE ID

CWE-93

Source

GitHub

Vendor

npm

Product

basic-ftp

External References

https://github.com/patrickjuchli/basic-ftp/security/advisories/GHSA-chqc-8p9q-pq6q
https://github.com/patrickjuchli/basic-ftp/commit/2ecc8e2c500c5234115f06fd1dbde1aa03d70f4b
https://github.com/patrickjuchli/basic-ftp/releases/tag/v5.2.1
https://github.com/advisories/GHSA-chqc-8p9q-pq6q

CVE-2026-39983

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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