What is CVE-2026-41406?

CVE-2026-41406 is a medium-severity vulnerability in Openclaw, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.4/10. Published 2026-04-28.

How severe is CVE-2026-41406?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Auth bypass in Openclaw

CVE-2026-41406

OpenClaw before 2026.3.31 contains a sender allowlist bypass vulnerability that allows remote attackers to access restricted messages. Attackers can exploit fetched quoted, root, and thread context messages to bypass sender allowlist restr…

Vulnerability class: IDOR (Insecure Direct Object Reference)

EPSS: 0.000 (14.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.

Affected products

Openclaw — versions 0, 2026.3.31

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

GitHub Security Advisory (GHSA-877v-w3f5-3pcq) (vendor-advisory, Vendor Advisory)
Patch Commit (Patch, patch)
VulnCheck Advisory: OpenClaw < 2026.3.31 - Sender Allowlist Bypass via Thread History and Quoted Messages (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2026-41406?: CVE-2026-41406 is a medium-severity vulnerability in Openclaw, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.4/10. Published 2026-04-28.
How severe is CVE-2026-41406?: Medium severity. CVSS v3 base score is 5.4 out of 10.