CVE-2026-44240

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{"affected": [{"affectedData": [{"product": "basic-ftp", "vendor": "patrickjuchli", "versions": [{"status": "affected", "version": "< 5.3.1"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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. 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."}, {"lang": "es", "value": "basic-ftp es un cliente FTP para Node.js. Antes de la 5.3.1, basic-ftp es vulnerable a una denegaci\u00f3n de servicio del lado del cliente al analizar respuestas multil\u00ednea del canal de control FTP. Un servidor FTP malicioso o comprometido puede enviar una respuesta multil\u00ednea no terminada durante la fase inicial del banner FTP, antes de la autenticaci\u00f3n. El cliente sigue a\u00f1adiendo datos controlados por el atacante en FtpContext._partialResponse y vuelve a analizar repetidamente el b\u00fafer acumulado sin aplicar un tama\u00f1o m\u00e1ximo de respuesta de control. Como resultado, una aplicaci\u00f3n que utiliza basic-ftp puede quedarse atascada en connect() mientras el uso de memoria y CPU crece bajo la entrada controlada por el atacante. Esto puede llevar a denegaci\u00f3n de servicio a nivel de proceso, eliminaciones OOM de contenedores, reinicios de trabajadores, acumulaci\u00f3n de cola o degradaci\u00f3n del servicio en aplicaciones que se conectan autom\u00e1ticamente a puntos finales FTP. Esta vulnerabilidad est\u00e1 corregida en la versi\u00f3n 5.3.1."}], "id": "CVE-2026-44240", "lastModified": "2026-10-26T17:10:03.270", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-44240", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-05-14T12:31:54.775969Z", "version": "2.0.3"}}]}, "published": "2026-05-12T21:16:16.410", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/patrickjuchli/basic-ftp/security/advisories/GHSA-rpmf-866q-6p89"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/patrickjuchli/basic-ftp/security/advisories/GHSA-rpmf-866q-6p89"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}, {"lang": "en", "value": "CWE-770"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

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