SB2026042818 - Allocation of Resources Without Limits or Throttling in basic-ftp

Description

This security bulletin contains information about 1 vulnerability.

1) Allocation of Resources Without Limits or Throttling (CVE-ID: CVE-2026-44240)

CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to allocation of resources without limits or throttling in FtpContext._partialResponse and FTP control response parsing when processing unterminated multiline control-channel responses during the initial FTP banner phase. A remote attacker can send a specially crafted FTP server banner to cause a denial of service.

The issue is triggered before authentication, and no additional user interaction is required after the application initiates a normal FTP connection.

Remediation

Install update from vendor's website.

References

• https://github.com/patrickjuchli/basic-ftp/security/advisories/GHSA-rpmf-866q-6p89
• https://github.com/advisories/GHSA-rpmf-866q-6p89