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CVE

CVE-2026-45043

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

CVE-2026-45043

RustFS: ImportIam Allows Creation of Backdoor Service Accounts Under Any Parent Including Root

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.3
-
4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45043.json, https://github.com/rustfs/rustfs/security/advisories/GHSA-566f-q62r-wcr8, https://nvd.nist.gov/vuln/detail/CVE-2026-45043

Severity

0

CVSS Score
0
10

Basic Information

Base CVSS
0
EPSS Probability
0.00226%
EPSS Percentile
0.13604%
Introduced Version
0
Fix Available
9f07029373af3c989bb26ac98a7df2c086b37c5c

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