Auth bypass in Openclaw
CVE-2026-100534
OpenClaw versions before 2026.8.1 contain an authorization bypass vulnerability in webhook TaskFlow cancellation that allows attackers to cancel unrelated sessions. An attacker with a webhook route secret can supply an arbitrary child session key to cancel ACP or subagent work outside the route's configured authority.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published .
CVSS v3 metric
CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/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
Weakness classification (CWE)
References
- github.com/openclaw/openclaw/security/advisories/GHSA-g24w-m94m-59qc (vendor-advisory)
- www.vulncheck.com/advisories/openclaw-before-2026.8.1-session-cancellation-auth… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-100534?
- CVE-2026-100534 is a low-severity vulnerability in Openclaw, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 3.1/10. Published 2026-09-26.
- How severe is CVE-2026-100534?
- Low severity. CVSS v3 base score is 3.1 out of 10.