BIT-seaweedfs-2026-72921

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    BIT-seaweedfs-2026-72921

    Published: 17 Aug 2026Last Modified: 10 Sept 2026

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

    Details: SeaweedFS is a distributed storage system. Prior to 4.24, the weed/server/filer_server_handlers.go allowed_prefixes authorization check used strings.HasPrefix on raw path strings, so a filer JWT scoped to /tenant1 also authorized sibling paths such as /tenant1234, /tenant1-old, and /tenant1backup, enabling cross-tenant reads and writes with a valid scoped token. This issue is fixed in version 4.24.

    References: https://github.com/seaweedfs/seaweedfs/commit/05ed5c9ae8a2a45101b52b61d02f170d20d587ff, https://github.com/seaweedfs/seaweedfs/pull/9439, https://github.com/seaweedfs/seaweedfs/releases/tag/4.24, https://github.com/seaweedfs/seaweedfs/security/advisories/GHSA-gv5w-hfx8-8cwq, https://nvd.nist.gov/vuln/detail/CVE-2026-72921

    Affected packages

    Package

    Name: seaweedfs

    Purl: pkg:bitnami/seaweedfs

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -4.24.0

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    BIT-seaweedfs-2026-72921 | CVE-DB