What is CVE-2026-100589?

CVE-2026-100589 is a high-severity vulnerability in Openclaw, classified under Incorrect Authorization. CVSS score: 8.3/10. Published 2026-09-26.

How severe is CVE-2026-100589?

High severity. CVSS v3 base score is 8.3 out of 10.

Auth bypass in Openclaw

CVE-2026-100589

OpenClaw versions before 2026.7.1 contain a sandbox bypass vulnerability in the browser tool that allows sandboxed sessions to access paired node browser actions despite allowHostControl=false configuration. Attackers with control over sandboxed agent input can select a paired node and perform host browser operations, inspecting or manipulating the connected browser profile and its authenticated state.

Vulnerability class: Broken Access Control

Published 2026-09-26.

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Openclaw

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

github.com/openclaw/openclaw/security/advisories/GHSA-9x88-f7rh-4c83 (vendor-advisory)
www.vulncheck.com/advisories/openclaw-before-2026.7.1-sandbox-bypass-via-browse… (third-party-advisory)

Frequently asked questions

What is CVE-2026-100589?: CVE-2026-100589 is a high-severity vulnerability in Openclaw, classified under Incorrect Authorization. CVSS score: 8.3/10. Published 2026-09-26.
How severe is CVE-2026-100589?: High severity. CVSS v3 base score is 8.3 out of 10.