CVE-2026-58372

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.

References

• https://github.com/geo-chen/oss/blob/main/seaweedfs.md
• https://github.com/seaweedfs/seaweedfs/commit/0345658ea8e7c6a3948ad190634b00866ec244c9
• https://github.com/seaweedfs/seaweedfs/pull/9931
• https://github.com/seaweedfs/seaweedfs/releases/tag/4.34
• https://github.com/seaweedfs/seaweedfs/security/advisories/GHSA-w62w-66v9-vvgv