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Incorrect Authorization Affecting seaweedfs package, versions <4.40-r0

Severity

 Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.36% (28th percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-SEAWEEDFS-19503723
  • published3 Sept 2026
  • disclosed26 Aug 2026
Report a new vulnerability Found a mistake?

Introduced: 26 Aug 2026

CVE-2026-77317  (opens in a new tab)
CWE-863  (opens in a new tab)

How to fix?

Upgrade Minimos:latest seaweedfs to version 4.40-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream seaweedfs package and not the seaweedfs package as distributed by Minimos. See How to fix? for Minimos:latest relevant fixed versions and status.

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 with the same characters. A user granted access to /tenants/alice therefore also matches /tenants/alice-archive, /tenants/alice2, and similar siblings, because the check does not require a path-component boundary. An authenticated low-privilege SFTP user with a root home directory and narrow path permissions can thereby cross the configured ACL boundary to read another tenant's files, and to overwrite them if granted write, all through the documented SFTP service with its own valid credentials. This issue is fixed in version 4.40.