CVE-2026-55873CWE-863

SeaweedFS: Improper authorization in the S3Tables / Iceberg REST management API lets a low-privileged S3 user enumerate administrator-owned table buckets

Medium · published July 8, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
26.5
In the wild
Unconfirmed
What it is

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 account and fails open, allowing an authenticated low-privileged S3 user to enumerate administrator-owned table bucket names and ARNs. This issue is fixed in version 4.34.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00342 · 26.5th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2026-07-08T14:48Z
EPSS history
Timeline
  • 08 JUL 14:48Z
    SeaweedFS: Improper authorization in the S3Tables / Iceberg REST management API lets a low-privileged S3 user enumerate administrator-owned table buckets
    cvelistv5