{"id":"UBUNTU-CVE-2026-39983","details":"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.","modified":"2026-06-30T18:18:00.208718350Z","published":"2026-04-09T18:17:00Z","upstream":["CVE-2026-39983"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-39983"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-39983"},{"type":"REPORT","url":"https://github.com/patrickjuchli/basic-ftp/security/advisories/GHSA-chqc-8p9q-pq6q"},{"type":"REPORT","url":"https://github.com/patrickjuchli/basic-ftp/commit/2ecc8e2c500c5234115f06fd1dbde1aa03d70f4b"},{"type":"REPORT","url":"https://github.com/patrickjuchli/basic-ftp/releases/tag/v5.2.1"}],"affected":[{"package":{"name":"node-proxy-agents","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/node-proxy-agents?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0~2023071921-5"],"ecosystem_specific":{"binaries":[{"binary_name":"node-agent-base","binary_version":"7.1.0~0~2023071921-5"},{"binary_name":"node-args","binary_version":"5.0.3~0~2023071921-5"},{"binary_name":"node-basic-ftp","binary_version":"5.0.3~0~2023071921-5"},{"binary_name":"node-data-uri-to-buffer","binary_version":"5.0.1~0~2023071921-5"},{"binary_name":"node-degenerator","binary_version":"5.0.1~0~2023071921-5"},{"binary_name":"node-get-uri","binary_version":"6.0.1~0~2023071921-5"},{"binary_name":"node-http-proxy-agent","binary_version":"7.0.0~0~2023071921-5"},{"binary_name":"node-https-proxy-agent","binary_version":"7.0.1~0~2023071921-5"},{"binary_name":"node-pac-proxy-agent","binary_version":"7.0.0~0~2023071921-5"},{"binary_version":"7.0.0~0~2023071921-5","binary_name":"node-pac-resolver"},{"binary_name":"node-proxy","binary_version":"2.1.1~0~2023071921-5"},{"binary_name":"node-proxy-agent","binary_version":"6.3.0~0~2023071921-5"},{"binary_name":"node-socks-proxy-agent","binary_version":"8.0.1~0~2023071921-5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-39983.json"}},{"package":{"name":"node-proxy-agents","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/node-proxy-agents?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0~2024040606-5","0~2024040606-6","0~2025070717-1","0~2025070717-2"],"ecosystem_specific":{"binaries":[{"binary_version":"7.1.4~0~2025070717-2","binary_name":"node-agent-base"},{"binary_version":"5.0.3~0~2025070717-2","binary_name":"node-args"},{"binary_version":"5.0.5~0~2025070717-2","binary_name":"node-basic-ftp"},{"binary_version":"6.0.2~0~2025070717-2","binary_name":"node-data-uri-to-buffer"},{"binary_name":"node-degenerator","binary_version":"5.0.1~0~2025070717-2"},{"binary_name":"node-get-uri","binary_version":"6.0.5~0~2025070717-2"},{"binary_name":"node-http-proxy-agent","binary_version":"7.0.2~0~2025070717-2"},{"binary_name":"node-https-proxy-agent","binary_version":"7.0.6~0~2025070717-2"},{"binary_version":"7.2.0~0~2025070717-2","binary_name":"node-pac-proxy-agent"},{"binary_version":"7.0.1~0~2025070717-2","binary_name":"node-pac-resolver"},{"binary_name":"node-proxy","binary_version":"2.2.0~0~2025070717-2"},{"binary_name":"node-proxy-agent","binary_version":"6.5.0~0~2025070717-2"},{"binary_version":"8.0.5~0~2025070717-2","binary_name":"node-socks-proxy-agent"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-39983.json"}},{"package":{"name":"node-proxy-agents","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/node-proxy-agents?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0~2025070717-2","0~2025070717-6","0~2025070717+~cs15.2.7-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"node-agent-base","binary_version":"7.1.4~0~2025070717+~cs15.2.7-1build1"},{"binary_name":"node-args","binary_version":"5.0.3~0~2025070717+~cs15.2.7-1build1"},{"binary_name":"node-basic-ftp","binary_version":"5.2.0~0~2025070717+~cs15.2.7-1build1"},{"binary_name":"node-data-uri-to-buffer","binary_version":"6.0.2~0~2025070717+~cs15.2.7-1build1"},{"binary_name":"node-degenerator","binary_version":"5.0.1~0~2025070717+~cs15.2.7-1build1"},{"binary_version":"6.0.5~0~2025070717+~cs15.2.7-1build1","binary_name":"node-get-uri"},{"binary_name":"node-http-proxy-agent","binary_version":"7.0.2~0~2025070717+~cs15.2.7-1build1"},{"binary_version":"7.0.6~0~2025070717+~cs15.2.7-1build1","binary_name":"node-https-proxy-agent"},{"binary_name":"node-pac-proxy-agent","binary_version":"7.2.0~0~2025070717+~cs15.2.7-1build1"},{"binary_name":"node-pac-resolver","binary_version":"7.0.1~0~2025070717+~cs15.2.7-1build1"},{"binary_name":"node-proxy","binary_version":"2.2.0~0~2025070717+~cs15.2.7-1build1"},{"binary_name":"node-proxy-agent","binary_version":"6.5.0~0~2025070717+~cs15.2.7-1build1"},{"binary_name":"node-socks-proxy-agent","binary_version":"8.0.5~0~2025070717+~cs15.2.7-1build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-39983.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L"},{"type":"Ubuntu","score":"medium"}]}