---
cve: "CVE-2026-66072"
severity: "MEDIUM"
cvss: 6.0
epss: "0.3%"
vendor: "rabbitmq"
kev: false
exploited: false
published: "2026-09-23 20:13:13"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-25T07:55:43+02:00"
---

# CVE-2026-66072

> 6.0 MEDIUM · 🧪 PoC

## Beschreibung

RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.1, get_chunk_selector/1 calls binary_to_atom on the raw client-supplied  property from post-auth subscribe and resolve_offset_spec frames, with no whitelist and no existing guard. An authenticated stream client with read access to any stream can crash the broker node. Preconditions include rabbitmq_stream plugin enabled Authenticated stream-protocol user with read access to at least one stream. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.1.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 8a56c37f099a7bf609a555de3f0ff8ed23964d20 (Commit)
- 49decca35e59d2cb774e5abd76412cee721308a5 (Commit)

## Referenzen

- <https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-48hm-chgv-398r>
- <https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6>
- <https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.1>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-66072) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_