---
cve: "CVE-2026-43566"
severity: "CRITICAL"
cvss: 9.1
epss: "0.4%"
vendor: "OpenClaw"
kev: false
exploited: false
published: "2026-05-05 12:16:20"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-11-09T17:55:52+01:00"
---

# CVE-2026-43566

> 9.1 CRITICAL · 🧪 PoC

## Beschreibung

OpenClaw versions 2026.4.7 before 2026.4.14 contain a privilege escalation vulnerability where heartbeat owner downgrade logic skips webhook wake events carrying untrusted content. Attackers can exploit this by sending untrusted webhook wake events to preserve owner-like execution context when the run should have been downgraded.

## CNA-Record (Kanon, cvelistV5)

- CNA: **VulnCheck**
- State: PUBLISHED
- Stand: 2026-05-05 14:34:42
- CNA-CVSS: **9.1** (`CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N`)

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **yes**
  - Technical Impact: **partial**

## CVSS-Vektor

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

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

## Schwachstellen-Klasse

- **CWE-184** — Incomplete List of Disallowed Inputs
  The product implements a protection mechanism that relies on a list of inputs (or properties of inputs) that are not allowed by policy or otherwise require other action to neutralize before additional processing takes place, but the list is incomplete.

## Angriffsmuster (CAPEC)

- [CAPEC-3 — Using Leading 'Ghost' Character Sequences to Bypass Input Filters](https://capec.mitre.org/data/definitions/3.html) _(Severity: Medium)_
- [CAPEC-6 — Argument Injection](https://capec.mitre.org/data/definitions/6.html) _(Severity: High)_
- [CAPEC-15 — Command Delimiters](https://capec.mitre.org/data/definitions/15.html) _(Severity: High)_
- [CAPEC-43 — Exploiting Multiple Input Interpretation Layers](https://capec.mitre.org/data/definitions/43.html) _(Severity: High)_
- [CAPEC-71 — Using Unicode Encoding to Bypass Validation Logic](https://capec.mitre.org/data/definitions/71.html) _(Severity: High)_
- [CAPEC-73 — User-Controlled Filename](https://capec.mitre.org/data/definitions/73.html) _(Severity: High)_
- [CAPEC-120 — Double Encoding](https://capec.mitre.org/data/definitions/120.html) _(Severity: Medium)_
- [CAPEC-182 — Flash Injection](https://capec.mitre.org/data/definitions/182.html) _(Severity: Medium)_

## Patch verfügbar (OSV)

- 323493fa1b6adc1e10b9954a68d5eaa5a6ef1170 (Commit)
- 31281bc92f55796817a92bc43f722cba1e77ab42 (Commit)

## BSI-Hinweise (deutsch)

- [OpenClaw: Mehrere Schwachstellen](https://wid.cert-bund.de/portal/wid/sicherheitshinweis/WID-SEC-W-2026-1161) — _BSI-Einstufung: hoch_
  Ein Angreifer kann mehrere Schwachstellen in OpenClaw ausnutzen, um erweiterte Rechte zu erlangen, beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, Daten offenzulegen oder zu manipulieren oder andere, nicht näher spezifizierte Angriffe durchzuführen.

## Referenzen

- <https://github.com/openclaw/openclaw/security/advisories/GHSA-g2hm-779g-vm32>
- <https://github.com/openclaw/openclaw/commit/31281bc92f55796817a92bc43f722cba1e77ab42>
- <https://www.vulncheck.com/advisories/openclaw-privilege-escalation-via-untrusted-webhook-wake-events>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2026-43566/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_