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mudler-agentandEttore Di Giacinto
756b019ce4
fix(httpclient): validate redirect targets and pin dialed addresses for user URLs Clients that fetch user-supplied URLs followed redirects without checking the target, so a public host could send them to a loopback, link-local or private address. The host was also resolved twice, once to validate it and once to connect, so a changing DNS answer could bypass the check. Add httpclient.WithExternalOnly. It validates every redirect hop against the external URL policy and, for the default transport, resolves the host, refuses it if any address is non-public, and dials the validated address. Environment proxies are not used for such clients. Move the policy (ValidateExternalURL, IsPublicIP) into pkg/httpclient so it can be used without an import cycle; pkg/utils keeps delegating to it. IsPublicIP now also refuses 100.64.0.0/10, 0.0.0.0/8, 192.0.0.0/24, 198.18.0.0/15, 240.0.0.0/4, multicast, and NAT64 addresses that wrap a non-public IPv4 address. Use the option for the base64, image, audio and video downloads, and drop the video client's own per-hop check. Assisted-by: Claude Code:claude-haiku-5-5 Co-authored-by: Ettore Di Giacinto <mudler@localai.io>