---
cve: "CVE-2026-73289"
severity: "HIGH"
cvss: 8.1
epss: "23%"
vendor: "rustfs"
kev: false
exploited: false
published: "2026-08-12 15:18:32"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-16T01:03:00+02:00"
---

# CVE-2026-73289

> 8.1 HIGH · 🧪 PoC

## Beschreibung

RustFS is a distributed object storage system built in Rust. Prior to 1.0.0-beta.12, RustFS evaluates the ForAllValues: and ForAnyValue: set qualifiers with the negated string operators StringNotEquals, StringNotEqualsIgnoreCase, StringNotLike, ArnNotEquals, and ArnNotLike using each other's semantics because crates/policy/src/policy/function/string.rs negates the aggregate result after eval or eval_like instead of negating each request-value predicate before quantification. Partially overlapping policy and request value sets can therefore make an Allow condition grant access to an excluded principal or make a Deny guardrail fail, including policies based on jwt:groups and jwt:roles; absent keys also receive the opposite ForAllValues: and ForAnyValue: behavior. This issue is fixed in version 1.0.0-beta.12.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- 92f83bfe155d8a3b9cdd903086e5b28d52339efb (Commit)
- 2e5cef513fb31e25940f1c77e208f28b302561bb (Commit)

## Referenzen

- <https://github.com/rustfs/rustfs/security/advisories/GHSA-v9cp-qfw9-9pfp>
- <https://github.com/rustfs/rustfs/commit/92f83bfe155d8a3b9cdd903086e5b28d52339efb>
- <https://github.com/rustfs/rustfs/releases/tag/1.0.0-beta.12>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-73289) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_