---
id: CVE-2026-100534
title: >-
  OpenClaw versions before 2026.8.1 contain an authorization bypass
  vulnerability in webhook TaskFlow cancellation that allows attackers to cancel
  unrelated sessions
summary: >-
  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 se…
severity: low
cvss: 3.1
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L'
cwe:
  - CWE-639
vendor: OpenClaw
product: OpenClaw
affected:
  - OpenClaw < 2026.8.1
published: '2026-09-26'
updated: '2026-09-26'
sourceUpdated: '2026-09-26T03:16:58.957'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-100534'
references:
  - url: >-
      https://github.com/openclaw/openclaw/security/advisories/GHSA-g24w-m94m-59qc
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/openclaw-before-2026.8.1-session-cancellation-authorization-bypass
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-26T03:25:24.676Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.