What’s Vulnerable › Vulnerabilities

CVE-2026-45043: RustFS: ImportIam Allows Creation of Backdoor Service Accounts Under Any Parent Including Root

• Severity: critical (CVSS 9.3 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-29 · updated 2026-07-21
• Weakness: CWE-269

Description

RustFS is a distributed object storage system built in Rust. Prior to 1.0.0-beta.2, improper validation in the PUT /rustfs/admin/v3/import-iam endpoint allows a user with ImportIAMAction to create service accounts under arbitrary parent identities, including the root user (minioadmin). The endpoint accepts attacker-controlled parent, claims, accessKey, and secretKey values without enforcing privilege boundaries or sanitization. This enables privilege escalation to full administrative access using a persistent, attacker-defined credential. This vulnerability is fixed in 1.0.0-beta.2.

Affected products

• rustfs: before 1.0.0-beta.2

References

• https://github.com/rustfs/rustfs/security/advisories/GHSA-566f-q62r-wcr8
• https://github.com/rustfs/rustfs/security/advisories/GHSA-566f-q62r-wcr8

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