CVE-2026-54917 — Security Box Score

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Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-54917HIGH

SeaweedFS: Path traversal in the S3 and Iceberg REST gateways allows cross-bucket access

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   N   N   N   N   N    7.8   .0039   31.8     —

AFFECTED
  Product    Versions  Fixed
  seaweedfs  < 4.30 –  —

TIMELINE
  Jun 16  Reserved by GitHub_M
  Jun 25  EXPLOIT PUBLISHED — CVE-2026-54917 (seaweedfs). Public exploit reference added.
  Jun 25  Published (CNA: GitHub_M)

CWE-22 · CNA: GitHub_M · CVSS v4.0 · 2 references · NVD status: Analyzed

Description

SeaweedFS is a distributed storage system for object storage (S3), file systems, and Iceberg tables. Prior to 4.30, the S3 API gateway and the Iceberg REST catalog gateway construct their routers with mux.NewRouter().SkipClean(true). With path cleaning disabled, a .. segment inside the URL survives routing, so a request such as `GET /bucket-A/../evil-bucket/key`, is matched as bucket=bucket-A, object=../evil-bucket/key. The captured object key is then joined into a filer path with util.JoinPath (S3) / path.Join (Iceberg), which collapse the .. server-side, so the actual read or write lands in evil-bucket. This vulnerability is fixed in 4.30.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
June 16, 2026	Reserved	Reserved by GitHub_M
June 25, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-54917 (seaweedfs). Public exploit reference added.
June 25, 2026	Published	Published (CNA: GitHub_M)

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
seaweedfs	seaweedfs	—	< 4.30	—

Weaknesses

CWE-22

References (2)

https://github.com/seaweedfs/seaweedfs/pull/9687 [Issue Tracking, Mitigation]
https://github.com/seaweedfs/seaweedfs/security/advisories/GHSA-w62w-66v9-vvgv [Exploit, Patch, Vendor Advisory]

Authoritative record: CVE-2026-54917 at cve.org

Vendors: seaweedfs

Weaknesses: CWE-22

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-54917 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.