GHSA-MX42-J6WV-PX98 RustFS has an authorization bypass in multipart UploadPartCopy enables cross-bucket object exfiltration

RustFS contains a missing authorization check in the multipart copy path UploadPartCopy. A low-privileged user who cannot read objects from a victim bucket can still exfiltrate victim objects by copying them into an attacker-controlled multipart upload and completing the upload. This breaks tenan...

RustFS has an authorization bypass in multipart UploadPartCopy enables cross-bucket object exfiltration

RustFS contains a missing authorization check in the multipart copy path UploadPartCopy. A low-privileged user who cannot read objects from a victim bucket can still exfiltrate victim objects by copying them into an attacker-controlled multipart upload and completing the upload. This breaks tenan...

CVE-2026-39360 RustFS has an authorization bypass in multipart UploadPartCopy enables cross-bucket object exfiltration

RustFS is a distributed object storage system built in Rust. Prior to alpha.90, RustFS contains a missing authorization check in the multipart copy path UploadPartCopy. A low-privileged user who cannot read objects from a victim bucket can still exfiltrate victim objects by copying them into an...

CVE-2026-39360 RustFS has an authorization bypass in multipart UploadPartCopy enables cross-bucket object exfiltration

RustFS is a distributed object storage system built in Rust. Prior to alpha.90, RustFS contains a missing authorization check in the multipart copy path UploadPartCopy. A low-privileged user who cannot read objects from a victim bucket can still exfiltrate victim objects by copying them into an...

CVE-2026-39360

RustFS contains an authorization bypass in the multipart copy path (UploadPartCopy) prior to alpha.90. A low-privileged user who cannot read objects from a victim bucket can exfiltrate victim objects by copying them into an attacker-controlled multipart upload and completing the upload, breaking ...