Skip to main content

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in basic-ftp

CVE-2026-27699

  • basic-ftp
High
9.8/10

Summary

The `basic-ftp` FTP client library for Node.js contains a Path Traversal vulnerability 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.

  • LOW
  • NETWORK
  • HIGH
  • UNCHANGED
  • NONE
  • NONE
  • HIGH
  • HIGH

CWE-22 - Path Traversal

Path traversal (or directory traversal), is a vulnerability that allows malicious users to traverse the server's root directory, gaining access to arbitrary files and folders such as application code & data, back-end credentials, and sensitive operating system files. In the worst-case scenario, an attacker could potentially execute arbitrary files on the server, resulting in a denial of service attack. Such an exploit may severely impact the integrity, confidentiality, and availability of an application.

References

Advisory Timeline

  • Published