ToolHive: SSRF guard misses IPv6 NAT64 ranges (64:ff9b::/96, 64:ff9b:1::/48), allowing metadata/internal access behind a NAT64 gateway

Summary ToolHive's hand-rolled private/reserved-IP SSRF guard networking.IsPrivateIP in pkg/networking/utilities.go does not recognize the IPv6 NAT64 address ranges — the well-known prefix 64:ff9b::/96 RFC 6052 and the RFC 8215 local-use prefix 64:ff9b:1::/48. As a result, an address such as...

CVE-2026-42345

FastGPT (version 4.14.11 and earlier) exposes an SSRF risk in isInternalAddress() (packages/service/common/system/utils.ts) where a fullUrl.startsWith() hardcoded blocklist can be bypassed by at least 7 URL-encoding techniques that resolve to the cloud metadata endpoint. The broader private IP ch...