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
References
https://github.com/rustfs/rustfs/security/advisories/GHSA-xgr5-qc6w-vcg9
https://github.com/rustfs/rustfs/security/advisories/GHSA-xgr5-qc6w-vcg9
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
Vulnerability status
Analyzed
Published
2026-01-08T15:15:45.583Z
1 week agoLast modified
2026-01-15T21:13:08.733Z
3 hours ago