What is CVE-2026-41393?

CVE-2026-41393 is a medium-severity vulnerability in Openclaw, classified under Origin Validation Error. CVSS score: 4.8/10. Published 2026-04-28.

How severe is CVE-2026-41393?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Vulnerability in Openclaw

CVE-2026-41393

OpenClaw before 2026.3.31 contains a wide-area discovery vulnerability allowing arbitrary tailnet peers to be accepted as DNS authorities. Attackers with same-tailnet position and CA-trusted endpoint access can exfiltrate operator credenti…

EPSS: 0.000 (0.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N.

Affected products

Openclaw — versions 0, 2026.3.31

Weakness classification (CWE)

CWE-346 — Origin Validation Error

References

GitHub Security Advisory (GHSA-q9w8-cf67-r238) (vendor-advisory, Vendor Advisory)
Patch Commit (Patch, patch)
VulnCheck Advisory: OpenClaw < 2026.3.31 - Arbitrary DNS Authority Acceptance and Credential Exfiltration via Wide-Area Discovery (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2026-41393?: CVE-2026-41393 is a medium-severity vulnerability in Openclaw, classified under Origin Validation Error. CVSS score: 4.8/10. Published 2026-04-28.
How severe is CVE-2026-41393?: Medium severity. CVSS v3 base score is 4.8 out of 10.