---
id: CVE-2026-72921
title: SeaweedFS is a distributed storage system
summary: >-
  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…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-863
vendor: seaweedfs
product: github.com/seaweedfs/seaweedfs
affected:
  - github.com/seaweedfs/seaweedfs < 0.0.0-20260512171048-05ed5c9ae8a2
patched:
  - github.com/seaweedfs/seaweedfs 0.0.0-20260512171048-05ed5c9ae8a2
published: '2026-08-11'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T20:46:02.457'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-72921'
references:
  - url: >-
      https://github.com/seaweedfs/seaweedfs/commit/05ed5c9ae8a2a45101b52b61d02f170d20d587ff
    label: security-advisories@github.com
  - url: 'https://github.com/seaweedfs/seaweedfs/pull/9439'
    label: security-advisories@github.com
  - url: 'https://github.com/seaweedfs/seaweedfs/releases/tag/4.24'
    label: security-advisories@github.com
  - url: >-
      https://github.com/seaweedfs/seaweedfs/security/advisories/GHSA-gv5w-hfx8-8cwq
    label: security-advisories@github.com
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-72921'
  - url: 'https://github.com/advisories/GHSA-gv5w-hfx8-8cwq'
tags:
  - nvd
  - ghsa
  - go
epss: 0.00426
epssPercentile: 0.34267
aliases:
  - GHSA-gv5w-hfx8-8cwq
ecosystem: go
ingestedAt: '2026-09-02T23:52:22.939Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-72921)

Affected packages:

- `github.com/seaweedfs/seaweedfs < 0.0.0-20260512171048-05ed5c9ae8a2`

Patched in:

- `github.com/seaweedfs/seaweedfs 0.0.0-20260512171048-05ed5c9ae8a2`

Source: https://github.com/advisories/GHSA-gv5w-hfx8-8cwq