Auth bypass in Seaweedfs
CVE-2026-55873
SeaweedFS is a distributed storage system. In versions 4.08 through 4.33, requests signed with SigV4 service s3tables are routed to the S3Tables management API where authorization collapses account-less S3 identities into the shared admin…
Vulnerability class: Broken Access Control
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Seaweedfs — versions >= 4.08, < 4.34
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-2026-55873?
- CVE-2026-55873 is a medium-severity vulnerability in Seaweedfs, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2026-07-08.
- How severe is CVE-2026-55873?
- Medium severity. CVSS v3 base score is 4.3 out of 10.