Auth bypass in Seaweedfs
CVE-2026-72921
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 p…
Vulnerability class: Broken Access Control
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
Affected products
- Seaweedfs — versions < 4.24
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-72921?
- CVE-2026-72921 is a high-severity vulnerability in Seaweedfs, classified under Incorrect Authorization. CVSS score: 8.1/10. Published 2026-08-11.
- How severe is CVE-2026-72921?
- High severity. CVSS v3 base score is 8.1 out of 10.