CVE-2026-100534 OpenClaw before 2026.8.1 Session Cancellation Authorization Bypass
Attackers with webhook secrets can cancel unrelated sessions, causing denial of service and bypassing authorization controls in OpenClaw.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-100534?
CVE-2026-100534 is a low-severity missing authorization vulnerability in OpenClaw, published on 26 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-639
Which versions are affected by CVE-2026-100534?
How do I fix CVE-2026-100534?
Upgrade to a fixed version.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-100534 being exploited?
There is no known exploitation of CVE-2026-100534 in the wild and no public exploit code.
Sources
Also known as GHSA-g24w-m94m-59qc, GHSA-gg3j-3f24-xwfp, MINI-7xgv-fpmp-36cw.