CVE-2026-100557
Received Received - Intake

Authorization Bypass in OpenClaw Skill Tools

Publication date: 2026-09-26

Last updated on: 2026-09-26

Assigner: VulnCheck

Description
OpenClaw versions before 2026.8.1 contain an authorization bypass vulnerability in skill tool dispatch that fails to carry the sender's owner status. Non-owner senders authorized to invoke skill commands can access owner-only tools and server credentials reserved for owners.

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Meta Information

Published
2026-09-26
Last Modified
2026-09-26
Generated
2026-09-26
AI Q&A
2026-09-26
EPSS Evaluated
N/A
NVD
CVE-2026-100557
EUVD
EUVD-2026-87493

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
openclaw openclaw to 2026.8.1 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-863 The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

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Executive Summary

OpenClaw versions before 2026.8.1 have an authorization bypass flaw in skill tool dispatch. Non-owner users with permission to invoke skill commands can access owner-only tools and server credentials due to missing sender owner status verification.

Detection Guidance

To detect this vulnerability, check OpenClaw versions before 2026.8.1 by running version check commands like 'openclaw --version' or inspecting installed package versions. Audit skill tool dispatch configurations to verify if non-owner senders can access owner-only tools. Review logs for unauthorized access attempts to owner-restricted tools or server credentials.

Impact Analysis

This vulnerability allows unauthorized access to sensitive owner-only tools and server credentials. Attackers could exploit it to escalate privileges, steal data, or gain control over affected systems if they have basic skill command permissions.

Compliance Impact

This vulnerability could lead to unauthorized data access or exposure, violating GDPR's data protection principles or HIPAA's security requirements for protected health information. Compliance may be compromised if owner-only tools handle regulated data.

Mitigation Strategies
  • Upgrade OpenClaw to version 2026.8.1 or later to patch the vulnerability.
  • Disable skill tool dispatch for non-owner senders before upgrading.
  • Audit installed skills that map commands to owner-only tools to identify potential exposure.

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