---
cve: "CVE-2026-94083"
severity: "CRITICAL"
cvss: 9.4
epss: "0.4%"
vendor: "OISF"
kev: false
exploited: false
published: "2026-09-20 02:16:53"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T10:01:30+02:00"
---

# CVE-2026-94083

> 9.4 CRITICAL · 🧪 PoC

## Beschreibung

Suricata before 8.0.7 has a DoH2 type confusion that can cause an invalid free, because cleanup code for the HTTP2 state is executed even though the actual state is HTTP1 (when there is a DoH2 request with an HTTP1 to HTTP2 upgrade). This requires app-layer.protocols.doh2 to be enabled, which is the default in 8.x versions.

## CVSS-Vektor

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

| 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 | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Gering | warn |

## Patch verfügbar (OSV)

- d681600f3648030a67f7d618d30742bfd5fe7169 (Commit)

## Referenzen

- <https://forum.suricata.io/t/suricata-8-0-7-released/6467>
- <https://github.com/OISF/suricata/commit/e574009add9c208f319e1d9d15b3bb1229c88074>
- <https://github.com/OISF/suricata/compare/suricata-8.0.6...suricata-8.0.7>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-94083) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_