CVE-2026-39983

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.

• CWE-93
• CWE-93

• https://github.com/patrickjuchli/basic-ftp/commit/2ecc8e2c500c5234115f06fd1dbde1aa03d70f4bPatch
• https://github.com/patrickjuchli/basic-ftp/releases/tag/v5.2.1Product, Release Notes
• https://github.com/patrickjuchli/basic-ftp/security/advisories/GHSA-chqc-8p9q-pq6qExploit, Mitigation, Vendor Advisory
• https://access.redhat.com/errata/RHSA-2026:13826
• https://access.redhat.com/errata/RHSA-2026:9742
• https://access.redhat.com/security/cve/CVE-2026-39983
• https://bugzilla.redhat.com/show_bug.cgi?id=2456971
• https://github.com/patrickjuchli/basic-ftp/security/advisories/GHSA-chqc-8p9q-pq6qExploit, Mitigation, Vendor Advisory
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-39983.json

Published

Apr 9, 2026

Last Modified

Jul 15, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-39976Laravel Passport provides OAuth2 server support to Laravel. …7.1
• CVE-2026-39977flatpak-builder is a tool to build flatpaks from source. Fro…6.3
• CVE-2026-39979jq is a command-line JSON processor. In commits before 2f090…6.5
• CVE-2026-3998The WM JqMath plugin for WordPress is vulnerable to Stored C…6.4
• CVE-2026-39980OpenCTI is an open source platform for managing cyber threat…7.2
• CVE-2026-39981AGiXT is a dynamic AI Agent Automation Platform. Prior to 1.…8.8
• CVE-2026-39984Sigstore Timestamp Authority is a service for issuing RFC 31…5.5
• CVE-2026-39985LORIS (Longitudinal Online Research and Imaging System) is a…6.1
• CVE-2026-39987marimo is a reactive Python notebook. Prior to 0.23.0, Marim…9.8
• CVE-2026-3999A broken access control may allow an authenticated user to p…8.8
• CVE-2026-39998Improper Input Validation vulnerability in Apache APISIX. T…8.8
• CVE-2026-39999Authentication Bypass by Spoofing vulnerability in Apache AP…9.1