AUGUST 16, 2026
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Case File

CVE-2026-72921

HIGH · CVSS 8.1 EPSS 0.24% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-11 · Last synced 2026-08-16

CyberRota Analysis

AI-Generated

SeaweedFS versions prior to 4.24 are vulnerable due to improper authorization checks in the filer server, allowing a scoped JWT to access sibling paths, which can lead to unauthorized cross-tenant data access. This vulnerability poses a significant risk to data confidentiality and integrity, making it critical for organizations using SeaweedFS to prioritize upgrading to version 4.24 or later. Users managing multi-tenant environments should take immediate action to mitigate potential data breaches.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-72921
Severity
HIGH
CVSS
8.1
EPSS
0.24%

Original NVD Description

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.