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.
References
Configurations
No configuration.
History
14 May 2026, 13:16
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/patrickjuchli/basic-ftp/security/advisories/GHSA-rpmf-866q-6p89 - |
12 May 2026, 21:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-12 21:16
Updated : 2026-05-14 13:16
NVD link : CVE-2026-44240
Mitre link : CVE-2026-44240
CVE.ORG link : CVE-2026-44240
JSON object : View
Products Affected
No product.