CVE-2026-27699: critical vulnerability in patrickjuchli basic-ftp
Basic FTP has Path Traversal Vulnerability in its downloadToDir() method
Published · Updated
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28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.1epss 0.9%
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Affected products
patrickjuchli · basic-ftpRelated CVEs — patrickjuchli basic-ftp
In the same product, most dangerous first.
CVE-2026-39983HIGHFTP Command Injection via CRLF in basic-ftpEPSS 2.2%CVE-2026-44240HIGHbasic-ftp allows a malicious FTP server to cause client-side denial of service via unbounded multiline control response bufferingEPSS 0.5%CVE-2026-102990HIGHbasic-ftp: Quadratic-time CPU denial of service in Client.list() Unix directory-listing parser (RE_LINE backtracking)EPSS 0.4%CVE-2026-41324HIGHbasic-ftp vulnerable to denial of service via unbounded memory consumption in Client.list()EPSS 0.3%