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CVE-2026-22043

RustFS has IAM deny_only Short-Circuit that Allows Privilege Escalation via Service Account Minting PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
rustfs / rustfsaffected >= 1.0.0-alpha.13, < 1.0.0-alpha.79

CWE

CWE-269, CWE-284

References

ADP enrichment

CISA-ADP

No English description supplied.