CVE-2026-72921: Seaweedfs

High severity, CVSS 8.1. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• Seaweedfs Seaweedfs: before 4.24 (fixed in 4.24)

Published 2026-08-11. Last modified 2026-09-09.