OpenClaw versions before 2026.8.1 contain an authorization bypass vulnerability in webhook TaskFlow cancellation that allows attackers to cancel… (CVE-2026-100534)
OpenClaw versions prior to 2026.8.1 have an authorization bypass vulnerability in the webhook TaskFlow cancellation feature. This flaw allows an attacker possessing a webhook route secret to cancel unrelated sessions by supplying arbitrary child session keys, potentially disrupting ACP or subagent work beyond the intended scope of the route's authority. The vulnerability has a low severity score and does not impact confidentiality or integrity but can cause limited availability disruption.
AI Analysis
Technical Summary
CVE-2026-100534 describes an authorization bypass vulnerability in OpenClaw's webhook TaskFlow cancellation mechanism affecting versions before 2026.8.1. An attacker with access to a webhook route secret can provide arbitrary child session keys to cancel sessions unrelated to their authorized scope, including ACP or subagent tasks. The vulnerability is classified under CWE-639 (Authorization Bypass Through User-Controlled Key) and has a CVSS v3.1 base score of 3.1, indicating low severity with network attack vector, high attack complexity, low privileges required, no user interaction, and only availability impact.
Potential Impact
The vulnerability allows attackers to cancel unrelated sessions, potentially disrupting availability of ACP or subagent work outside the route's configured authority. There is no impact on confidentiality or integrity. The disruption is limited to availability and requires possession of a webhook route secret and high attack complexity.
Mitigation Recommendations
A fix is available in OpenClaw version 2026.8.1. Users should upgrade to version 2026.8.1 or later to remediate this authorization bypass vulnerability. No additional mitigation guidance is provided or required beyond applying the official fix.
OpenClaw versions before 2026.8.1 contain an authorization bypass vulnerability in webhook TaskFlow cancellation that allows attackers to cancel… (CVE-2026-100534)
Description
OpenClaw versions prior to 2026.8.1 have an authorization bypass vulnerability in the webhook TaskFlow cancellation feature. This flaw allows an attacker possessing a webhook route secret to cancel unrelated sessions by supplying arbitrary child session keys, potentially disrupting ACP or subagent work beyond the intended scope of the route's authority. The vulnerability has a low severity score and does not impact confidentiality or integrity but can cause limited availability disruption.
CVSS v3.1
Score 3.1low
Affected software
pkg:github/openclaw/openclawRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-100534 describes an authorization bypass vulnerability in OpenClaw's webhook TaskFlow cancellation mechanism affecting versions before 2026.8.1. An attacker with access to a webhook route secret can provide arbitrary child session keys to cancel sessions unrelated to their authorized scope, including ACP or subagent tasks. The vulnerability is classified under CWE-639 (Authorization Bypass Through User-Controlled Key) and has a CVSS v3.1 base score of 3.1, indicating low severity with network attack vector, high attack complexity, low privileges required, no user interaction, and only availability impact.
Potential Impact
The vulnerability allows attackers to cancel unrelated sessions, potentially disrupting availability of ACP or subagent work outside the route's configured authority. There is no impact on confidentiality or integrity. The disruption is limited to availability and requires possession of a webhook route secret and high attack complexity.
Mitigation Recommendations
A fix is available in OpenClaw version 2026.8.1. Users should upgrade to version 2026.8.1 or later to remediate this authorization bypass vulnerability. No additional mitigation guidance is provided or required beyond applying the official fix.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-gg3j-3f24-xwfp
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-100534"]
- Database Specific Severity
- LOW
- Cvss Version
- 3.1
Threat ID: 6ab74f2df7a7c54106e1384c
Added to database: 09/26/2026, 04:50:53 UTC
Last enriched: 09/26/2026, 04:56:24 UTC
Last updated: 09/26/2026, 14:21:47 UTC
Views: 5
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