Detections
Analytics
CVE-2026-39983
high
Description
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.
References
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-39983.json
https://github.com/patrickjuchli/basic-ftp/security/advisories/GHSA-chqc-8p9q-pq6q
https://github.com/patrickjuchli/basic-ftp/releases/tag/v5.2.1
https://github.com/patrickjuchli/basic-ftp/commit/2ecc8e2c500c5234115f06fd1dbde1aa03d70f4b
https://bugzilla.redhat.com/show_bug.cgi?id=2456971
https://access.redhat.com/security/cve/CVE-2026-39983