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 attacker-controlled multipart upload and completing the upload. This breaks tenant isolation in multi-user / multi-tenant deployments. This vulnerability is fixed in alpha.90.
References
| Link | Resource |
|---|---|
| https://github.com/rustfs/rustfs/security/advisories/GHSA-mx42-j6wv-px98 | Exploit Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
No history.
Information
Published : 2026-04-07 19:16
Updated : 2026-07-24 21:10
NVD link : CVE-2026-39360
Mitre link : CVE-2026-39360
CVE.ORG link : CVE-2026-39360
JSON object : View
Products Affected
rustfs
- rustfs
CWE
CWE-862
Missing Authorization
