{"id":"UBUNTU-CVE-2026-102990","details":"basic-ftp is an FTP client for Node.js. Prior to 6.2.1, Client.list() can be forced by a malicious or compromised FTP server to spend quadratic CPU time parsing a directory listing because the RE_LINE expression in src/parseListUnix.ts backtracks across adjacent variable-length owner and group fields when a long Unix-style line has a valid prefix but cannot satisfy the later size and date fields. parseList() selects a parser from the last nonblank line and then applies it to every line, so a normal final line can select the Unix parser while an earlier crafted line blocks the Node.js event loop and freezes the process. This issue is fixed in version 6.2.1.","modified":"2026-10-02T22:30:13.199064477Z","published":"2026-10-02T00:00:00Z","upstream":["CVE-2026-102990"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-102990"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-102990"},{"type":"REPORT","url":"https://github.com/patrickjuchli/basic-ftp/security/advisories/GHSA-c475-qrg2-pj4r"},{"type":"REPORT","url":"https://github.com/patrickjuchli/basic-ftp/commit/d0d9e07c56e519587bb50532ac6eadbb0cb0cfe9"},{"type":"REPORT","url":"https://github.com/patrickjuchli/basic-ftp/releases/tag/v6.2.1"}],"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_version":"5.0.3~0~2023071921-5","binary_name":"node-basic-ftp"},{"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_version":"7.0.1~0~2023071921-5","binary_name":"node-https-proxy-agent"},{"binary_version":"7.0.0~0~2023071921-5","binary_name":"node-pac-proxy-agent"},{"binary_name":"node-pac-resolver","binary_version":"7.0.0~0~2023071921-5"},{"binary_name":"node-proxy","binary_version":"2.1.1~0~2023071921-5"},{"binary_version":"6.3.0~0~2023071921-5","binary_name":"node-proxy-agent"},{"binary_version":"8.0.1~0~2023071921-5","binary_name":"node-socks-proxy-agent"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102990.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_version":"5.0.1~0~2025070717+~cs15.2.7-1build1","binary_name":"node-degenerator"},{"binary_name":"node-get-uri","binary_version":"6.0.5~0~2025070717+~cs15.2.7-1build1"},{"binary_version":"7.0.2~0~2025070717+~cs15.2.7-1build1","binary_name":"node-http-proxy-agent"},{"binary_name":"node-https-proxy-agent","binary_version":"7.0.6~0~2025070717+~cs15.2.7-1build1"},{"binary_name":"node-pac-proxy-agent","binary_version":"7.2.0~0~2025070717+~cs15.2.7-1build1"},{"binary_version":"7.0.1~0~2025070717+~cs15.2.7-1build1","binary_name":"node-pac-resolver"},{"binary_version":"2.2.0~0~2025070717+~cs15.2.7-1build1","binary_name":"node-proxy"},{"binary_version":"6.5.0~0~2025070717+~cs15.2.7-1build1","binary_name":"node-proxy-agent"},{"binary_version":"8.0.5~0~2025070717+~cs15.2.7-1build1","binary_name":"node-socks-proxy-agent"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102990.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"medium"}]}