Description
SeaweedFS before 4.34 contains a path traversal vulnerability in the S3 gateway DeleteMultipleObjectsHandler that allows authenticated S3 principals with write access to a single bucket to delete arbitrary objects in other tenants' buckets by supplying object keys containing ../ sequences in the DeleteObjects XML request body. Attackers can bypass authorization controls through a confused deputy condition, as the validateRequestPath middleware only inspects URL-captured path variables and never examines request-body keys, allowing the filer path to collapse directory traversal sequences and resolve deletions outside the authorized bucket.
Severity (CVSS)
| Base score | 7.2 |
|---|---|
| Severity | High |
| Version | CVSS 4.0 |
| Vector | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N |
| Provided by | CNA |
Weaknesses
- CWE-22 — Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected products
| Vendor | Product | Versions |
|---|---|---|
| seaweedfs | seaweedfs | 0 to <4.34 |
References
- https://github.com/seaweedfs/seaweedfs/releases/tag/4.34 (release-notes)
- https://github.com/seaweedfs/seaweedfs/pull/9931 (related issue-tracking)
- https://github.com/seaweedfs/seaweedfs/commit/0345658ea8e7c6a3948ad190634b00866ec244c9 (patch)
- https://github.com/seaweedfs/seaweedfs/security/advisories/GHSA-w62w-66v9-vvgv
- https://github.com/geo-chen/oss/blob/main/seaweedfs.md (technical-description exploit)
- https://www.vulncheck.com/advisories/seaweedfs-cross-bucket-object-deletion-via-deleteobjects-request-body-keys (third-party-advisory)
Generated from the official CVE List on 01 Jul 2026 07:05 UTC.