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.
Published: 2026-09-26
Score: 2.3 Low
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Mon, 28 Sep 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sat, 26 Sep 2026 02:30:00 +0000

Type Values Removed Values Added
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.
Title OpenClaw before 2026.8.1 Session Cancellation Authorization Bypass
First Time appeared Openclaw
Openclaw openclaw
Weaknesses CWE-639
CPEs cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:*:*:*
Vendors & Products Openclaw
Openclaw openclaw
References
Metrics cvssV3_1

{'score': 3.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L'}

cvssV4_0

{'score': 2.3, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'}


Subscriptions

Openclaw Openclaw
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-09-28T17:43:08.927Z

Reserved: 2026-09-26T01:00:40.148Z

Link: CVE-2026-100534

cve-icon Vulnrichment

Updated: 2026-09-28T17:43:03.957Z

cve-icon NVD

Status : Deferred

Published: 2026-09-26T03:16:58.957

Modified: 2026-09-28T18:17:11.923

Link: CVE-2026-100534

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-26T08:00:10Z

Weaknesses
  • CWE-639

    Authorization Bypass Through User-Controlled Key