---
cve: "CVE-2026-57227"
severity: "HIGH"
cvss: 7.5
epss: "0.4%"
vendor: "OISF"
kev: false
exploited: false
published: "2026-09-18 21:17:01"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T16:22:20+02:00"
---

# CVE-2026-57227

> 7.5 HIGH · 🧪 PoC

## Beschreibung

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 7.0.0 until 7.0.17 and 8.0.6, the MQTT parser in rust/src/mqtt/mqtt.rs permits repeated PUBREC or PUBREL messages to be appended to one transaction without a limit. Crafted MQTT traffic can grow transaction state indefinitely, consuming CPU and memory and causing slowdown or denial of service. This issue is fixed in versions 8.0.6 and 7.0.17.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 4c28cc1b4ac64f48efdca6ce3e09748227a04a7e (Commit)
- f707f3208de8216e4eccada5c10e6edce460a82a (Commit)

## Referenzen

- <https://github.com/OISF/suricata/security/advisories/GHSA-7h2h-hpj2-9w6p>
- <https://github.com/OISF/suricata/commit/03ba8a71d827dd36a0ceb512f45d2f440f260a3a>
- <https://github.com/OISF/suricata/commit/5cde93dea38533c9b225128ba9d54955997dc273>
- <https://github.com/OISF/suricata/commit/c03666d261256df5a2d1f5800872da8a5addf6a5>
- <https://github.com/OISF/suricata/releases/tag/suricata-7.0.17>
- <https://github.com/OISF/suricata/releases/tag/suricata-8.0.6>
- <https://redmine.openinfosecfoundation.org/issues/8525>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-57227) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_