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 wake events to preserve owner-like execution context when the run should have been downgraded.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.007 (52.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 52.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.007 · change: +0.003
Affected products
- Openclaw — versions 2026.4.7, 2026.4.14
Weakness classification (CWE)
References
- github.com/openclaw/openclaw/security/advisories/GHSA-g2hm-779g-vm32 (vendor-advisory, Vendor Advisory)
- github.com/openclaw/openclaw/commit/31281bc92f55796817a92bc43f722cba1e77ab42 (Patch, patch)
- www.vulncheck.com/advisories/openclaw-privilege-escalation-via-untrusted-webhoo… (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.