{"api_version":"1","generated_at":"2026-05-12T23:15:45+00:00","cve":"CVE-2026-44240","urls":{"html":"https://cve.report/CVE-2026-44240","api":"https://cve.report/api/cve/CVE-2026-44240.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-44240","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-44240"},"summary":{"title":"basic-ftp allows a malicious FTP server to cause client-side denial of service via unbounded multiline control response buffering","description":"basic-ftp is an FTP client for Node.js. Prior to 5.3.1, basic-ftp is vulnerable to client-side denial of service when parsing FTP control-channel multiline responses. A malicious or compromised FTP server can send an unterminated multiline response during the initial FTP banner phase, before authentication. The client keeps appending attacker-controlled data into FtpContext._partialResponse and repeatedly reparses the accumulated buffer without enforcing a maximum control response size. 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Prior to 5.3.1, basic-ftp is vulnerable to client-side denial of service when parsing FTP control-channel multiline responses. A malicious or compromised FTP server can send an unterminated multiline response during the initial FTP banner phase, before authentication. The client keeps appending attacker-controlled data into FtpContext._partialResponse and repeatedly reparses the accumulated buffer without enforcing a maximum control response size. As a result, an application using basic-ftp can remain stuck in connect() while memory and CPU usage grow under attacker-controlled input. This can lead to process-level denial of service, container OOM kills, worker restarts, queue backlog, or service degradation in applications that automatically connect to FTP endpoints. This vulnerability is fixed in 5.3.1.","Type":"Description","Title":"basic-ftp allows a malicious FTP server to cause client-side den"}]}}}