What is CVE-2026-43566?

CVE-2026-43566 is a critical-severity vulnerability in Openclaw, classified under Incomplete List of Disallowed Inputs. CVSS score: 9.1/10. Published 2026-05-05.

How severe is CVE-2026-43566?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Vulnerability in Openclaw

CVE-2026-43566

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 wa…

EPSS: 0.001 (34.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Openclaw — versions 2026.4.7, 2026.4.14

Weakness classification (CWE)

CWE-184 — Incomplete List of Disallowed Inputs

References

GitHub Security Advisory (GHSA-g2hm-779g-vm32) (vendor-advisory, Vendor Advisory)
Patch Commit (Patch, patch)
VulnCheck Advisory: OpenClaw 2026.4.7 < 2026.4.14 - Privilege Escalation via Untrusted Webhook Wake Events (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2026-43566?: CVE-2026-43566 is a critical-severity vulnerability in Openclaw, classified under Incomplete List of Disallowed Inputs. CVSS score: 9.1/10. Published 2026-05-05.
How severe is CVE-2026-43566?: Critical severity. CVSS v3 base score is 9.1 out of 10.