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Vulnerability record · CVE-2026-73080 · published 11 August 2026

CVE-2026-73080: Server-side request forgery (SSRF) vulnerability

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.

9.3 CVSS 3.1 Critical EPSS 0.53% · top 57.7% CWE-918 · Server-side request forgery (SSRF) Deferred
9.3CVSS 3.1 base score
0.53%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
9 Sep 2026Last modified by NVD

Description

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

References

LinkTags
https://github.com/seaweedfs/seaweedfs/commit/69da20bdaec923e5a43d8aa71bf3c0a2051fc019
https://github.com/seaweedfs/seaweedfs/pull/9441
https://github.com/seaweedfs/seaweedfs/releases/tag/4.24
https://github.com/seaweedfs/seaweedfs/security/advisories/GHSA-87fv-vqqr-m4jr

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Source: NIST National Vulnerability Database (record CVE-2026-73080), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.