Vulnerability · Published Jul 8, 2026 · Assigned by GitHub_M

CVE-2026-55873SeaweedFS: Improper authorization in the S3Tables / Iceberg REST management API lets a low-privileged S3 user enumerate administrator-owned table buckets

Medium 4.3

In plain English

A medium-severity incorrect authorization in seaweedfs from seaweedfs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.3%top 72.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/seaweedfs/seaweedfs	0.0.0-20260614205536-b13463880c1f	GHSA-hgpf-8634-g44c
Go	github.com/seaweedfs/seaweedfs	0.0.0-20260614205536-b13463880c1f	GO-2026-6329

Affected products (as reported)

Vendor	Product	Versions
seaweedfs	seaweedfs	>= 4.08, < 4.34

Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

References

https://github.com/seaweedfs/seaweedfs/security/advisories/GHSA-hgpf-8634-g44c x_refsource_CONFIRM
https://github.com/seaweedfs/seaweedfs/pull/9961 x_refsource_MISC
https://github.com/seaweedfs/seaweedfs/commit/b13463880c1fa62e255c058a9228b63cc95b4b36 x_refsource_MISC
https://github.com/seaweedfs/seaweedfs/releases/tag/4.34 x_refsource_MISC