CVE-2026-39360
MEDIUM EPSS 10.1%
Published Apr 7, 20262mo ago · Modified Jun 17, 20262w ago
5.3 CVSS 4.0
Published Apr 7, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago
Description
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
10.1% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available
Weaknesses 1
CWE-862 Missing Authorization Authorization
Affected Products 89
| Vendor | Product | Version | Range |
|---|---|---|---|
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
| rustfs | rustfs | 1.0.0 | any |
References 1
- github.com https://github.com/rustfs/rustfs/security/advisories/GHSA-mx42-j6wv-px98
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.