Vulnerability in Openclaw
CVE-2026-40045
OpenClaw before 2026.4.2 accepts non-loopback cleartext ws:// gateway endpoints and transmits stored gateway credentials over unencrypted connections. Attackers can forge discovery results or craft setup codes to redirect clients to malicious endpoints, disclosing plaintext gateway credentials.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.7 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.002 (6.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 6.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.001
Affected products
- Openclaw — versions 0, 2026.4.2
Weakness classification (CWE)
References
- github.com/openclaw/openclaw/security/advisories/GHSA-83f3-hh45-vfw9 (vendor-advisory, Vendor Advisory)
- github.com/openclaw/openclaw/commit/a941a4fef9bc43b2973c92d0dcff5b8a426210c5 (Patch, patch)
- www.vulncheck.com/advisories/openclaw-cleartext-credential-transmission-via-une… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-40045?
- CVE-2026-40045 is a medium-severity vulnerability in Openclaw, classified under Cleartext Transmission of Sensitive Information. CVSS score: 5.7/10. Published 2026-04-21.
- How severe is CVE-2026-40045?
- Medium severity. CVSS v3 base score is 5.7 out of 10.