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CVE-2026-39983 PUBLISHED CVSS 8.600000381469727 HIGH

basic-ftp is an FTP client for Node.js. Prior to 5.2.1, basic-ftp allows FTP command injection via CRLF sequences (\r\n) in file path parameters passed to high-level path APIs such as cd(), remove(), rename(), uploadFrom(), downloadTo(), list(), and removeDir(). The library's protectWhitespace() helper only handles leading spaces and returns other paths unchanged, while FtpContext.send() writes the resulting command string directly to the control socket with \r\n appended. This lets attacker-controlled path strings split one intended FTP command into multiple commands. This vulnerability is fixed in 5.2.1.

EPSS 1.24% · 79.3th percentile

Risk Scores

CVSS v3.1
8.600000381469727
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L
EPSS Score
1.24%
79.3th percentile

Affected Products

VendorProductVersions
npmbasic-ftp5.2.0, 5.2.0
patrickjuchlibasic-ftp< 5.2.1

Timeline

References

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