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...

CVE-2026-77368: Authorization Bypass Through User-Controlled Key

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...