Vulnerability in Openclaw
CVE-2026-43534
OpenClaw before 2026.4.10 contains an input validation vulnerability that allows external hook metadata to be enqueued as trusted system events. Attackers can supply malicious hook names to escalate untrusted input into higher-trust agent context.
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: 0.003 (20.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 20.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Openclaw — versions 0, 2026.4.10
Weakness classification (CWE)
References
- github.com/openclaw/openclaw/security/advisories/GHSA-7g8c-cfr3-vqqr (vendor-advisory, Vendor Advisory)
- github.com/openclaw/openclaw/commit/e3a845bde5b54f4f1e742d0a51ba9860f9619b29 (Patch, patch)
- www.vulncheck.com/advisories/openclaw-unsanitized-external-input-in-agent-hook-… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-43534?
- CVE-2026-43534 is a critical-severity vulnerability in Openclaw, classified under Insufficient Verification of Data Authenticity. CVSS score: 9.1/10. Published 2026-05-05.
- How severe is CVE-2026-43534?
- Critical severity. CVSS v3 base score is 9.1 out of 10.