Server-side Request Forgery (SSRF) Affecting ip package, versions *
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about Server-side Request Forgery (SSRF) vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-JS-IP-12761655
- published16 Sept 2025
- disclosed16 Sept 2025
- creditUnknown
Introduced: 16 Sep 2025
NewCVE-2025-59437 (opens in a new tab)How to fix?
There is no fixed version for ip.
Overview
ip is a Node library.
Affected versions of this package are vulnerable to Server-side Request Forgery (SSRF) via the ip.isPublic() and ip.isPrivate() functions. An attacker can interact with internal network resources by supplying specially crafted IP address such as null route ("0") that is being incorrectly identified as public.
Note: This issue exists because of an incomplete fix for CVE-2024-29415.
Exploit is only possible if the application and operating system interpret connection attempts to 0 or 0.0.0.0 as connections to 127.0.0.1.
PoC
Test null route bypass:
node -e "const ip=require('ip'); console.log('0 bypass:', ip.isPublic('0'));" - returns true