POST /api/ImageUploads
If the server responds with a successful fetch (even an error from the local service), the SSRF exists. Juice Shop's base configuration has no whitelist. But in hardened real-world apps, you might see filters. Practice bypass techniques: juice shop ssrf
http://localhost:3000/solve/challenge/ssrf POST /api/ImageUploads If the server responds with a
For defenders, the lesson is clear: . Validate the destination as if your internal network depends on it—because it does. This article is for educational purposes. Always test on systems you own or have explicit permission to test. Always test on systems you own or have
const dns = require('dns').promises; const ip = await dns.lookup(urlObj.hostname); if (isPrivateIP(ip.address)) throw new Error('Blocked'); The SSRF vulnerability in OWASP Juice Shop is small but elegant. It demonstrates a single line of missing validation leading to a complete breach of network segmentation. For penetration testers, mastering SSRF means understanding that the server is just another user—one with far more privileges.