---
cve: "CVE-2026-45043"
severity: "CRITICAL"
cvss: 9.3
epss: "23%"
vendor: "rustfs"
kev: false
exploited: false
published: "2026-05-29 12:25:08"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-18T01:54:51+02:00"
---

# CVE-2026-45043

> 9.3 CRITICAL · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

```
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
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 9f07029373af3c989bb26ac98a7df2c086b37c5c (Commit)

## Referenzen

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

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-45043) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_