CVE-2026-45043 | THREATINT

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.

PUBLISHED Reserved 2026-05-08 | Published 2026-05-29 | Updated 2026-06-02 | Assigner GitHub_M

CRITICAL: 9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N

Problem types

CWE-269: Improper Privilege Management

CWE-284: Improper Access Control

Product status

< 1.0.0-beta.2

affected

References

github.com/...rustfs/security/advisories/GHSA-566f-q62r-wcr8 exploit

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

cve.org (CVE-2026-45043)

nvd.nist.gov (CVE-2026-45043)

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