CVE-2026-27699— Basic FTP has Path Traversal Vulnerability in its downloadToDir() method
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I. Basic Information for CVE-2026-27699
Vulnerability Information
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Vulnerability Title
Basic FTP has Path Traversal Vulnerability in its downloadToDir() method
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Basic FTP 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Basic FTP是Patrick Juchli个人开发者的一个Node.js的FTP客户端库。 basic ftp 5.2.0之前版本存在路径遍历漏洞，该漏洞源于downloadToDir()方法中存在路径遍历漏洞，恶意FTP服务器可发送包含路径遍历序列的文件名目录列表，导致文件被写入预期下载目录之外。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
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Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| patrickjuchli | basic-ftp | < 5.2.0 | - |
II. Public POCs for CVE-2026-27699
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
Same weakness: CWE-22
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AzuraCast: Path Traversal in `currentDirectory` Parameter En - CVE-2026-42574
apko dirFS has a symlink-following path traversal that allow
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