CVE-2026-73080: critical vulnerability in seaweedfs
SeaweedFS: Unauthenticated SSRF with response read-back via VolumeServer.FetchAndWriteNeedle
Published · Updated
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28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.3epss 0.5%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
Affected products
seaweedfs · seaweedfsRelated CVEs — seaweedfs
In the same product, most dangerous first.
CVE-2026-54917HIGHSeaweedFS: Path traversal in the S3 and Iceberg REST gateways allows cross-bucket accessEPSS 1.6%CVE-2026-58372HIGHSeaweedFS < 4.34 - Cross-Bucket Object Deletion via DeleteObjects Request-Body KeysEPSS 0.9%CVE-2026-72920CRITICALSeaweedFS: Unauthenticated filer IAM gRPC service grants S3 administrative controlEPSS 0.8%CVE-2026-55874HIGHSeaweedFS: Path traversal in the S3 gateway X-Amz-Copy-Source header allows cross-bucket object readEPSS 0.6%CVE-2026-72921HIGHSeaweedFS: Filer JWT allowed_prefixes literal prefix match allows cross-tenant access to sibling pathsEPSS 0.4%CVE-2026-77298HIGHSeaweedFS S3 OIDC Bearer authentication bypasses IAM role trust policyEPSS 0.4%