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CVE PROGRAM SOURCE RECORD5.7 Medium

CVE-2026-22042

RustFS has IAM Incorrect Authorization in ImportIam that Allows Privilege Escalation

Description

RustFS is a distributed object storage system built in Rust. Prior to version 1.0.0-alpha.79, he `ImportIam` admin API validates permissions using `ExportIAMAction` instead of `ImportIAMAction`, allowing a principal with export-only IAM permissions to perform import operations. Since importing IAM data performs privileged write actions (creating/updating users, groups, policies, and service accounts), this can lead to unauthorized IAM modification and privilege escalation. Version 1.0.0-alpha.79 fixes the issue.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

rustfs rustfs

  • < 1.0.0-alpha.79affected

References