CVE-2026-49991

RustFS 1.0.0-beta.4 is affected by a path traversal vulnerability in the Snowball auto-extract feature. Authenticated users with only PutObject permission on their own bucket can write arbitrary objects into other users’ buckets, breaking multi-tenant isolation. Root causes include: (1) No ../ sa...

CVE-2026-49991 RustFS Snowball Auto-Extract: Path Traversal allows cross-bucket object injection

RustFS is a distributed object storage system built in Rust. In 1.0.0-beta.4, authenticated users with only PutObject permission on their own bucket can exploit a path traversal vulnerability in the Snowball auto-extract feature to write arbitrary objects into other users' buckets, completely...