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 2026-04-20.

How severe is CVE-2026-40045?

Medium severity. CVSS v3 base score is 5.7 out of 10.

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 malici…

EPSS: 0.000 (0.4th percentile) — read the EPSS interpretation.

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.

Affected products

Openclaw — versions 0, 2026.4.2

Weakness classification (CWE)

CWE-319 — Cleartext Transmission of Sensitive Information

References

GitHub Security Advisory (GHSA-83f3-hh45-vfw9) (vendor-advisory)
Patch Commit (patch)
VulnCheck Advisory: OpenClaw < 2026.4.2 - Cleartext Credential Transmission via Unencrypted WebSocket Gateway Endpoints (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 2026-04-20.
How severe is CVE-2026-40045?: Medium severity. CVSS v3 base score is 5.7 out of 10.