Server-Side Request Forgery in ftp-srv
All versions of ftp-srv from v1.0.0 onward to v4.3.3 are vulnerable to Server-Side Request Forgery (SSRF). The package fails to prevent remote clients to access other resources in the network, for example when connecting to the server through telnet. This allows attackers to access any network resources available to the server, including private resources in the hosting environment.
Recommendation
Upgrade to patched versions
^2.19.6, ^3.1.2, ^4.3.4
Workarounds
Blacklisting the FTP Command PORT will prevent the server from exposing this behaviour through active connections until a fix is applied.
const ftp = new FtpSrv({
blacklist: ['PORT']
});Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | ftp-srv | >= 1.0.0, < 2.19.6, >= 3.0.0, < 3.1.2, >= 4.0.0, < 4.3.4 | 2.19.6, 3.1.2, 4.3.4 |
References
- Weakness (CWE)
CWE-918- Platform
- npm
- Package
ftp-srv- Disclosed
- 04.09.2020
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-r4m5-47cq-6qg8 - CC BY 4.0
Vulnerability history: ftp-srv
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 3
- First → latest
- 08.2020 02.2021
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- High 1
- Medium 1
Disclosures per year
- 2020: 2
- 2021: 1
- 2022: 0
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 0
-
Server-Side Request Forgery in ftp-srv this entry
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