CVSS 4.0
7.8 highCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:NCVE-2026-54917
High (7.8) in seaweedfs seaweedfs. EPSS 1.6% chance of exploitation in the next 30 days. Fixed in github.com/seaweedfs/seaweedfs 0.0.0-20260526080459-dd1b4287899e.
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.
Severity
CVSS 3.1
10.0 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N- EPSS
- 1.6% chance of exploitation in the next 30 days; higher than 76% of CVEs (scores of 2026-10-31)
- CWE
- CWE-22
- Published
- Modified
- Record from
- the NVD, synced
Affected
- seaweedfs:seaweedfs
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-w62w-66v9-vvgv | Go | github.com/seaweedfs/seaweedfs | <0.0.0-20260526080459-dd1b4287899e | 0.0.0-20260526080459-dd1b4287899e |
| GO-2026-6221 | Go | github.com/seaweedfs/seaweedfs | <0.0.0-20260526080459-dd1b4287899e | 0.0.0-20260526080459-dd1b4287899e |