RustFS is a distributed object storage system built in Rust. In versions 1.0.0-alpha.13 through 1.0.0-alpha.78, a flawed `deny_only` short-circuit in RustFS IAM allows a restricted service account or STS credential to self-issue an unrestricted service account, inheriting the parent’s full privileges. This enables privilege escalation and bypass of session/inline policy restrictions. Version 1.0.0-alpha.79 fixes the issue.
Metrics
Affected Vendors & Products
References
History
Fri, 09 Jan 2026 13:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Rustfs
Rustfs rustfs |
|
| Vendors & Products |
Rustfs
Rustfs rustfs |
Thu, 08 Jan 2026 18:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Thu, 08 Jan 2026 15:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | RustFS is a distributed object storage system built in Rust. In versions 1.0.0-alpha.13 through 1.0.0-alpha.78, a flawed `deny_only` short-circuit in RustFS IAM allows a restricted service account or STS credential to self-issue an unrestricted service account, inheriting the parent’s full privileges. This enables privilege escalation and bypass of session/inline policy restrictions. Version 1.0.0-alpha.79 fixes the issue. | |
| Title | RustFS has IAM deny_only Short-Circuit that Allows Privilege Escalation via Service Account Minting | |
| Weaknesses | CWE-269 CWE-284 |
|
| References |
| |
| Metrics |
cvssV4_0
|
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-01-08T15:54:47.243Z
Reserved: 2026-01-05T22:30:38.720Z
Link: CVE-2026-22043
Updated: 2026-01-08T15:50:42.079Z
Status : Awaiting Analysis
Published: 2026-01-08T15:15:45.583
Modified: 2026-01-08T18:08:18.457
Link: CVE-2026-22043
No data.
OpenCVE Enrichment
Updated: 2026-01-09T13:24:51Z