Advisories for Npm/Dssrf package

is_url_safe 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.

is_url_safe in v1.0.3 contains an SSRF bypass. remove_at_symbol_in_string is applied to the raw URL string before new URL() parses it. This strips the @ that separates userinfo from host, corrupting the hostname so internal IPs are never checked.

A vulnerability on dssrf allow, an attacker to use, one of them following ipv6 Input Category http://[::1]/ IPv6 loopback http://[fc00::1]/ IPv6 ULA http://[fe80::1]/ IPv6 link-local http://[::ffff:127.0.0.1]/ IPv4-mapped loopback http://[::ffff:169.254.169.254]/ IPv4-mapped IMDS http://[::ffff:100.64.0.1]/ IPv4-mapped CGNAT http://[64:ff9b::7f00:1]/ NAT64 well-known prefix http://[64:ff9b:1::1]/ NAT64 local-use (RFC 8215) http://[5f00::1]/ SRv6 SID (RFC 9602) http://[3fff::1]/ IPv6 documentation (RFC 9637) http://[fec0::1]/ IPv6 site-local (deprecated, RFC 3879) http://[::127.0.0.1]/ IPv4-compatible IPv6 one of those to bypass dssrf and the …