CVE-2026-100566
Received Received - Intake

Access Control Bypass in OpenClaw LINE Agent

Publication date: 2026-09-26

Last updated on: 2026-09-26

Assigner: VulnCheck

Description
OpenClaw LINE versions before 2026.8.1 contain an access control vulnerability where group allowlist mode silently inherits DM allowFrom values when groupAllowFrom is not explicitly configured. Attackers with group participation can trigger the agent despite configured group allowlist restrictions when DM access is broader than intended group access.

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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-2026-100566
EUVD
EUVD-2026-87485

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
openclaw line to 2026.8.1 (exc)
openclaw line 2026.8.1

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.

Attack-Flow Graph

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Executive Summary

This vulnerability affects OpenClaw LINE versions before 2026.8.1. It involves an access control flaw where group allowlist mode silently inherits DM allowFrom values when groupAllowFrom is not explicitly set. Attackers in a group can bypass group restrictions if DM access is broader than intended group access.

Detection Guidance

Check OpenClaw LINE version with npm list @openclaw/line. If version is below 2026.8.1, the system is vulnerable. Review groupPolicy settings in configuration files for accounts using allowlist mode without explicit groupAllowFrom values.

Impact Analysis

Attackers with group participation could trigger the agent despite group allowlist restrictions if DM access is broader than intended. The impact depends on exposed tools and conversation data. No privileges or user interaction are needed for exploitation.

Compliance Impact

This vulnerability could potentially violate compliance with GDPR and HIPAA by allowing unauthorized access to sensitive data. If an attacker bypasses group allowlist restrictions due to broader DM access, they may gain access to protected conversations or tools, leading to unauthorized data exposure or modification. This violates principles of least privilege and data protection required by these regulations.

Mitigation Strategies

Upgrade to @openclaw/line@2026.8.1 or later. For accounts using group allowlist mode, explicitly set a finite groupAllowFrom list before upgrading. Ensure DM allowFrom values are not broader than intended group access.

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