Description
The `basic-ftp` FTP client library for Node.js contains a path traversal vulnerability (CWE-22) in versions prior to 5.2.0 in the `downloadToDir()` method. A malicious FTP server can send directory listings with filenames containing path traversal sequences (`../`) that cause files to be written outside the intended download directory. Version 5.2.0 patches the issue.
References (3)
Core 3
Core References
Vendor Advisory x_refsource_confirm
https://github.com/patrickjuchli/basic-ftp/security/advisories/GHSA-5rq4-664w-9x2c
Patch x_refsource_misc
https://github.com/patrickjuchli/basic-ftp/commit/2a2a0e6514357b9eda07c2f8afbd3f04727a7cd9
Release Notes x_refsource_misc
https://github.com/patrickjuchli/basic-ftp/releases/tag/v5.2.0
Scores
CVSS v3
9.1
EPSS
0.0015
EPSS Percentile
35.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
total
Details
CWE
CWE-22
Status
published
Products (2)
npm/basic-ftp
0 - 5.2.0npm
patrickjuchli/basic-ftp
< 5.2.0
Published
Feb 25, 2026
Tracked Since
Feb 25, 2026