EUVD-2026-51574

DSSRF is a Node.js library that provides a wide range of utilities and advanced SSRF defense checks. Prior to 1.0.5, isurlsafe can treat localhost as safe when DNS resolver 1.1.1.1 returns NXDOMAIN because dns.resolve4 yields no address and no dns.lookup fallback occurs, allowing server-side...

dssrf: any users using 1.1.1.1 DNS is impacted by SSRF

Summary isurlsafe can treat localhost as safe when DNS resolver 1.1.1.1 returns NXDOMAIN because dns.resolve4 yields no address and no dns.lookup fallback occurs, allowing server-side request forgery. POC Example to simulate 1.1.1.1 in version before 1.5.0 of dssrf: js import isurlsafe from...