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    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 copy. This issue is fixed in version 4.34.

    Published:Jul 8, 2026
    Last Modified:Jul 21, 2026
    EPS:Jul 8, 2026
    EPSS Score:0.00327
    CVSS Score:7.7

    Affected Products

    Vendor
    Seaweedfs
    Product
    Seaweedfs

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2026-77317 (CVSS 8.1) — SeaweedFS is a distributed storage system for files and blobs. In versions from 3.88 through 4.39, the SFTP se…
    CVE-2026-77298 (CVSS 8.7) — SeaweedFS is a distributed storage system for files and blobs. In versions 4.39 and earlier, the S3 API accept…
    CVE-2026-77368 (CVSS 7.6) — SeaweedFS is a distributed storage system for files and blobs. In version 4.39, the filer's TUS resumable-uplo…
    CVE-2026-73080 (CVSS 9.3) — SeaweedFS is a distributed storage system. Prior to 4.24, VolumeServer.FetchAndWriteNeedle in weed/server/volu…
    CVE-2026-72921 (CVSS 8.1) — SeaweedFS is a distributed storage system. Prior to 4.24, the weed/server/filer_server_handlers.go allowed_pre…
    CVE-2026-72920 (CVSS 9.8) — SeaweedFS is a distributed storage system. Prior to 4.24, the filer registers the SeaweedIdentityAccessManagem…
    CVE-2026-55873 (CVSS 4.3) — SeaweedFS is a distributed storage system. In versions 4.08 through 4.33, requests signed with SigV4 service s…
    CVE-2026-58372 (CVSS 7.2) — SeaweedFS before 4.34 contains a path traversal vulnerability in the S3 gateway DeleteMultipleObjectsHandler t…
    CVE-2026-58371 (CVSS 2.3) — SeaweedFS before 4.30 reflects the callback query parameter verbatim into responses served with Content-Type a…

    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