cvedb.io
CVE-2026-22043
CRITICAL · CVSS 9.8
EPSS exploitation probability: 0%
Published 2026-01-08T15:15:45.583 · Last modified 2026-06-17T10:19:24.933

Summary

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.

Affected products

rustfs — rustfs

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.