Critical 9.1Published Feb 25, 2026

CVE-2026-27699Basic FTP has Path Traversal Vulnerability in its downloadToDir() method

Updated under an hour ago (Oct 26, 2026, 6:30 PM ET)

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Every CVE for patrickjuchli basic-ftp

Exploited in the last 30 days

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.

CVSS: 9.1 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Weakness (CWE): CWE-22
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Feb 27, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

patrickjuchli basic-ftp patrickjuchli:basic_ftp (from the name)	before 5.2.0	CNA record
patrickjuchli basic-ftp patrickjuchli:basic-ftp	before 5.2.0	NVD

References

References

https://github.com/patrickjuchli/basic-ftp/security/advisories/GHSA-5rq4-664w-9x2c	x-refsource-confirm, exploit, mitigation, vendor-advisory
https://github.com/patrickjuchli/basic-ftp/commit/2a2a0e6514357b9eda07c2f8afbd3f04727a7cd9	x-refsource-misc, patch
https://github.com/patrickjuchli/basic-ftp/releases/tag/v5.2.0	x-refsource-misc, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.