CVE-2026-73080
CriticalCVSS 9.3Summary
SeaweedFS before 4.24 has a vulnerability in the FetchAndWriteNeedle RPC that lacks authentication and target validation. An attacker can send requests to arbitrary hosts, including cloud metadata endpoints, and read the responses.
Risk Assessment
In cloud deployments, this can disclose instance metadata and IAM credentials, and reach internal services. The default unauthenticated gRPC plane increases the risk.
Recommendation
Upgrade SeaweedFS to version 4.24 or later. Restrict access to the volume server's gRPC port to trusted networks only.
Original NVD description (English source)
SeaweedFS is a distributed storage system. Prior to 4.24, VolumeServer.FetchAndWriteNeedle in weed/server/volume_grpc_remote.go fetches a caller-supplied remote endpoint through weed/remote_storage/s3/s3_storage_client.go and writes the response into a needle. The RPC performs no authentication and no target validation, allowing anyone who can reach a volume server's gRPC port to cause requests to arbitrary hosts, including loopback, link-local, RFC 1918, and cloud metadata endpoints such as 169.254.169.254, and read the response. On cloud deployments, this can disclose instance metadata and IAM credentials and reach otherwise unexposed internal services. The volume server gRPC plane is unauthenticated by default, and configuring documented JWT signing keys does not protect this RPC. This issue is fixed in version 4.24.