Allocation of Resources Without Limits or Throttling in basic-ftp - CVE-2026-41324
Published: April 16, 2026
Vulnerability identifier: #VU126358
CSH Severity: Medium
CVSS v4: 8.7 [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]
CVE-ID: CVE-2026-41324
CWE-ID: CWE-770
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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 Client.list() and StringWriter when processing directory listings from a remote FTP server. A remote attacker can send an extremely large or never-ending listing response to cause a denial of service.
Exploitation requires the victim to connect to a malicious or compromised FTP server and perform a directory listing operation.
Affected software
basic-ftp
How to mitigate CVE-2026-41324
Install security update from vendor's website.
basic-ftp - update to 5.3.0