Security Flaw in RustFS Distributed Object Storage by Rust
CVE-2026-22042

5.7MEDIUM

Key Information:

Vendor

Rustfs

Status
Rustfs
Vendor
CVE Published:
8 January 2026

What is CVE-2026-22042?

RustFS, a distributed object storage system, contains a vulnerability that arises from the incorrect validation of permissions within its ImportIam admin API. This flaw allows users with export-only IAM permissions to exploit the system and perform unauthorized import operations. Such actions could enable the creation and modification of crucial IAM-related entities, leading to elevated privileges and potential security breaches. The issue has been addressed in version 1.0.0-alpha.79 with a patch to ensure proper permission checks.

Affected Version(s)

rustfs < 1.0.0-alpha.79

References

https://github.com/rustfs/rustfs/security/advisories/GHSA...
x_refsource_CONFIRM

CVSS V4

Score:
5.7
Severity:
MEDIUM
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.