CVE-2026-22043
CRITICAL WAF: Low
CVSS 9.8
Published: 2026-01-08
CWE-269
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.
WAF Coverage Analysis
Improper Privilege Management
Low WAF Coverage
OWASP: A01:2021 Broken Access Control
Affected Software
| Vendor | Product | Version |
|---|---|---|
| rustfs | rustfs | 1.0.0 |
| rustfs | rustfs | 1.0.0 |
| rustfs | rustfs | 1.0.0 |
| rustfs | rustfs | 1.0.0 |
| rustfs | rustfs | 1.0.0 |
| rustfs | rustfs | 1.0.0 |
| rustfs | rustfs | 1.0.0 |
| rustfs | rustfs | 1.0.0 |
| rustfs | rustfs | 1.0.0 |
| rustfs | rustfs | 1.0.0 |
References
- github.com (Exploit, Vendor Advisory)