SeaweedFS <= 4.29 - Path Traversal File Write

SeaweedFS versions through 4.29 build the S3 API and Iceberg REST catalog routers with mux.NewRouter.SkipCleantrue, which disables URL path cleaning. A .. segment in the request path therefore survives routing and reaches the handlers unnormalised, so a request such as PUT...

CVE-2026-54917-SeaweedFS-Cross-Bucket-Traversal

CVE-2026-54917 — Salto de ruta entre buckets de la pasarela S3 de SeaweedFS Prueba de concepto y análisis técnico de CVE-2026-54917 , un salto de ruta en la pasarela de la API S3 de SeaweedFS que permite a quien lo invoca acceder a objetos en cualquier bucket , independientemente de los permisos ...

GO-2026-6361 SeaweedFS: Filer JWT allowed_prefixes literal prefix match allows cross-tenant access to sibling paths in github.com/seaweedfs/seaweedfs

SeaweedFS: Filer JWT allowedprefixes literal prefix match allows cross-tenant access to sibling paths in github.com/seaweedfs/seaweedfs...

GO-2026-6351 SeaweedFS: Unauthenticated filer IAM gRPC service grants S3 administrative control in github.com/seaweedfs/seaweedfs

SeaweedFS: Unauthenticated filer IAM gRPC service grants S3 administrative control in github.com/seaweedfs/seaweedfs...

SUSE CVE-2026-55873

SeaweedFS is a distributed storage system. In versions 4.08 through 4.33, requests signed with SigV4 service s3tables are routed to the S3Tables management API where authorization collapses account-less S3 identities into the shared admin account and fails open, allowing an authenticated...

SUSE CVE-2026-55874

SeaweedFS is a distributed storage system. Prior to 4.34, the S3 API gateway does not reject dot-dot path segments in the X-Amz-Copy-Source header used by CopyObject and UploadPartCopy, allowing an authenticated identity scoped to one bucket to read objects from other buckets through server-side...

SUSE CVE-2026-54917

SeaweedFS is a distributed storage system for object storage S3, file systems, and Iceberg tables. Prior to 4.30, the S3 API gateway and the Iceberg REST catalog gateway construct their routers with mux.NewRouter.SkipCleantrue. With path cleaning disabled, a .. segment inside the URL survives...

SUSE CVE-2026-73080

SeaweedFS is a distributed storage system. Prior to 4.24, VolumeServer.FetchAndWriteNeedle in weed/server/volumegrpcremote.go fetches a caller-supplied remote endpoint through weed/remotestorage/s3/s3storageclient.go and writes the response into a needle. The RPC performs no authentication and no...

Improper Authentication

github.com/seaweedfs/seaweedfs is vulnerable to improper authentication. The vulnerability is due to the filer registering the SeaweedIdentityAccessManagement gRPC service without mandatory authentication when jwt.filersigning.key is unset, which allows an attacker who can reach the filer gRPC po...

SeaweedFS: Filer JWT allowed_prefixes literal prefix match allows cross-tenant access to sibling paths

Impact When a filer JWT restricts a token to a set of path prefixes via allowedprefixes, the authorization check used a literal byte-prefix match strings.HasPrefix. A token scoped to /tenant1 therefore also authorized requests to sibling paths such as /tenant1234, /tenant1-old, and /tenant1backup...

GHSA-GV5W-HFX8-8CWQ SeaweedFS: Filer JWT allowed_prefixes literal prefix match allows cross-tenant access to sibling paths

Impact When a filer JWT restricts a token to a set of path prefixes via allowedprefixes, the authorization check used a literal byte-prefix match strings.HasPrefix. A token scoped to /tenant1 therefore also authorized requests to sibling paths such as /tenant1234, /tenant1-old, and /tenant1backup...

EUVD-2026-56159

SeaweedFS: Filer JWT allowedprefixes literal prefix match allows cross-tenant access to sibling paths...

GO-2026-6329 SeaweedFS: Improper authorization in the S3Tables / Iceberg REST management API lets a low-privileged S3 user enumerate administrator-owned table buckets in github.com/seaweedfs/seaweedfs

SeaweedFS: Improper authorization in the S3Tables / Iceberg REST management API lets a low-privileged S3 user enumerate administrator-owned table buckets in github.com/seaweedfs/seaweedfs...

GO-2026-6327 SeaweedFS: Path traversal in the S3 gateway X-Amz-Copy-Source header allows cross-bucket object read in github.com/seaweedfs/seaweedfs

SeaweedFS: Path traversal in the S3 gateway X-Amz-Copy-Source header allows cross-bucket object read in github.com/seaweedfs/seaweedfs...

SeaweedFS: Unauthenticated filer IAM gRPC service grants S3 administrative control

Impact The filer registered the IAM gRPC service SeaweedIdentityAccessManagement with no authentication. Any client able to reach the filer gRPC port could invoke IAM RPCs — CreateUser, CreateAccessKey, PutUserPolicy, and related calls — to mint credentials and grant itself S3 administrative...

EUVD-2026-56156

SeaweedFS: Unauthenticated filer IAM gRPC service grants S3 administrative control...

GHSA-2V6V-25FM-P4FG SeaweedFS: Unauthenticated filer IAM gRPC service grants S3 administrative control

Impact The filer registered the IAM gRPC service SeaweedIdentityAccessManagement with no authentication. Any client able to reach the filer gRPC port could invoke IAM RPCs — CreateUser, CreateAccessKey, PutUserPolicy, and related calls — to mint credentials and grant itself S3 administrative...

BIT-SEAWEEDFS-2026-77611 SeaweedFS: Authenticated S3 object-scope bypass in PutObjectAcl allows overwriting a different object with the same basename

SeaweedFS is a distributed storage system for files and blobs. In versions prior to 4.40, an authenticated S3 principal with permissions scoped to a nested object key can overwrite a different object outside that scope by calling PutObjectAcl on the key it is allowed to access. The handler...

BIT-SEAWEEDFS-2026-77368 SeaweedFS: Authenticated Cross-Prefix IDOR in Filer TUS Handler Enables Arbitrary Write to Tenant-Forbidden Paths

SeaweedFS is a distributed storage system for files and blobs. In version 4.39, the filer's TUS resumable-upload handler checks JWT allowedprefixes scoping only when a session is created, letting a low-privilege tenant hijack another tenant's upload session to write content to filer paths their o...

BIT-SEAWEEDFS-2026-77317 SeaweedFS: SFTP path ACL literal prefix match permits cross-tenant file read and overwrite

SeaweedFS is a distributed storage system for files and blobs. In versions from 3.88 through 4.39, the SFTP server evaluates configured path permissions with a literal string-prefix comparison, so a user scoped to a path is also granted the same access to any sibling path whose name merely begins...