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.

Related CPE's


a

rustfs

rustfs

66

Weaknesses



CWE-269CWE-284


CWE-522

CVSS impact metrics


CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.8 · Critical

Information


Source identifier

[email protected]

Vulnerability status

Analyzed

Published

2026-01-08T15:15:45.583Z

1 week ago

Last modified

2026-01-15T21:13:08.733Z

3 hours ago