CVE-2026-27699

critical · 9.1

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.

9.1

CVSS

0.7%

EPSS (exploit prob.)

52nd

EPSS percentile

2026-02-25

Published

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

Weaknesses

CWE-22

Affected products

Vendor	Product	Affected versions
patrickjuchli	basic-ftp	< 5.2.0

Check a specific version with /api/v1/cve/match.

References

https://github.com/patrickjuchli/basic-ftp/commit/2a2a0e6514357b9eda07c2f8afbd3f04727a7cd9
https://github.com/patrickjuchli/basic-ftp/releases/tag/v5.2.0
https://github.com/patrickjuchli/basic-ftp/security/advisories/GHSA-5rq4-664w-9x2c

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-27699