Vulnerability · Published Apr 24, 2026 · Assigned by GitHub_M
CVE-2026-41324basic-ftp vulnerable to denial of service via unbounded memory consumption in Client.list()
High 7.5
In plain English
A high-severity uncontrolled resource consumption in basic-ftp from patrickjuchli. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 27% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
basic-ftp is an FTP client for Node.js. Versions prior to 5.3.0 are vulnerable to denial of service through unbounded memory growth while processing directory listings from a remote FTP server. A malicious or compromised server can send an extremely large or never-ending listing response to `Client.list()`, causing the client process to consume memory until it becomes unstable or crashes. Version 5.3.0 fixes the issue.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:13 | node-proxy-agents | no fix listed | DEBIAN-CVE-2026-41324 |
| Debian:14 | node-proxy-agents | 0~2025070717+~cs15.3.7-1 | DEBIAN-CVE-2026-41324 |
| Ubuntu:24.04:LTS | node-proxy-agents | no fix listed | UBUNTU-CVE-2026-41324 |
| Ubuntu:25.10 | node-proxy-agents | no fix listed | UBUNTU-CVE-2026-41324 |
| Ubuntu:26.04:LTS | node-proxy-agents | no fix listed | UBUNTU-CVE-2026-41324 |
| Ubuntu:26.10 | node-proxy-agents | no fix listed | UBUNTU-CVE-2026-41324 |
| npm | basic-ftp | 5.3.0 | GHSA-rp42-5vxx-qpwr |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| patrickjuchli | basic-ftp | < 5.3.0 |
Weakness: CWE-400, CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H