What is CVE-2026-53866?

CVE-2026-53866 is a high-severity vulnerability in Openclaw, classified under Missing Authorization. CVSS score: 8.1/10. Published 2026-06-16.

How severe is CVE-2026-53866?

High severity. CVSS v3 base score is 8.1 out of 10.

Auth bypass in Openclaw

CVE-2026-53866

OpenClaw before 2026.5.12 contains an allowlist bypass vulnerability in shell inline-command parsing that allows authenticated operators to execute unapproved commands. A command request using shell inline-command forms could route through…

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

Affected products

Openclaw — versions 0, 2026.5.12

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-53866?: CVE-2026-53866 is a high-severity vulnerability in Openclaw, classified under Missing Authorization. CVSS score: 8.1/10. Published 2026-06-16.
How severe is CVE-2026-53866?: High severity. CVSS v3 base score is 8.1 out of 10.