Listen to this Post
How CVE-2026-62188 Works
OpenClaw is a personal AI assistant framework that integrates with various messaging platforms, including Feishu (Lark), through dedicated tool packages. The `@openclaw/feishu` package provides permission tools that manage account-level access controls and disablement settings for Feishu integrations. These settings are critical for enforcing the principle of least privilege, ensuring that only authorized users and contexts can perform sensitive operations within the integrated system.
The vulnerability, identified as CVE-2026-62188, stems from an incorrect authorization mechanism within these Feishu permission tools. The core issue is that the tools fail to properly enforce per-account disablement settings. When the affected feature is enabled and reachable, a lower-trust caller or a specially crafted input path could perform actions that should have required a stronger authorization or policy check. This means that even if an account has been explicitly disabled for certain actions, the flawed permission validation could allow those actions to proceed.
This flaw manifests as an authorization bypass vulnerability. The system accepts input paths or caller contexts that should be rejected based on established access control policies, effectively creating a backdoor for unauthorized action execution. An attacker could exploit this weakness by crafting specific inputs or leveraging lower-trust caller contexts to execute operations that normally would be restricted. The vulnerability is classified under CWE-285 (Improper Authorization) and aligns with the MITRE ATT&CK technique T1078 (Valid Accounts), as it involves the misuse of legitimate credentials or contexts to escalate privileges.
The impact of this vulnerability is significant. It enables potential attackers to perform actions that should require stronger authentication or administrative privileges. This could lead to data manipulation, privilege escalation, or unauthorized system modifications. The issue affects all versions of `@openclaw/feishu` up to and including 2026.6.6 and is fixed in version 2026.6.9. The fix involves enhanced validation mechanisms that properly enforce account-level disablement settings and ensure that all permission checks are performed against the correct authorization boundaries.
DailyCVE Form:
Platform: OpenClaw Feishu
Version: <=2026.6.6
Vulnerability: Authorization Bypass
Severity: Critical
Date: 2026-07-14
Prediction: Patch already available (2026.6.9)
What Undercode Say:
The following analytics and commands are provided for educational and defensive purposes to understand the nature of this vulnerability.
Analytics & Detection:
To identify potential exploitation of this vulnerability, system administrators and security teams should monitor Feishu integration logs for suspicious patterns. Look for API calls or actions performed by accounts that should have been disabled or lack the necessary permissions. The following `grep` command can be used to search for relevant entries in OpenClaw logs:
grep -i "feishu.permission|authorization.bypass|disablement.ignore" /path/to/openclaw/logs/
Additionally, auditing the current configuration for the Feishu tools can help verify if the vulnerable feature is enabled:
grep -r "feishu" /path/to/openclaw/config/ | grep -i "enabled|disable"
Exploit: (Educational Purposes!)
This section is for educational purposes only to illustrate how the vulnerability could be theoretically exploited. The core of the exploit lies in crafting a request or input that bypasses the per-account disablement check. An attacker might send a specially formatted API call to the Feishu integration endpoint that includes a lower-trust caller context, or manipulate input paths to perform an action that the disabled account should not be able to perform.
A simplified conceptual example of how such a request might be structured is:
curl -X POST https://openclaw-instance/feishu/api/action \
-H "Authorization: Bearer <lower-trust-token>" \
-d '{"action": "privileged_operation", "target_account": "[email protected]"}'
Protection:
The primary and most effective protection against CVE-2026-62188 is to upgrade to the patched version 2026.6.9 or later. This is the first stable version that contains the fix for the authorization bypass.
If an immediate upgrade is not possible, the following mitigations should be implemented:
1. Restrict the Affected Feature: Limit access to the vulnerable Feishu feature to only trusted operators. Disable the feature entirely if it is not currently needed.
2. Narrow Allowlists: Keep channel and tool allowlists as narrow as possible to reduce the attack surface.
3. Gateway Isolation: Avoid sharing a single OpenClaw Gateway instance between mutually untrusted users.
4. Audit Access Controls: Review and audit existing access control policies to verify that no unauthorized actions have occurred during the vulnerability window.
5. Implement Monitoring: Add monitoring controls to detect similar authorization anomalies in other integrated systems.
Impact:
The practical impact of CVE-2026-62188 depends heavily on the operator’s configuration and whether lower-trust input can reach the vulnerable path. However, the potential consequences are severe:
– Privilege Escalation: Lower-trust callers could perform actions reserved for higher-privilege users.
– Unauthorized Actions: Attackers could execute operations that should have been blocked by per-account disablement settings.
– Data Manipulation and System Modification: Exploitation could lead to unauthorized data access, modification, or system changes.
– Compromise of Trust Model: While OpenClaw’s trusted-operator model remains intact, this vulnerability creates a bypass that undermines the security of the Feishu integration specifically.
🎯Let’s Practice Exploiting & Learn Patching For Free:
🎓 Live Courses & Certifications:
Join Undercode Academy for Verified Certifications
🚀 Request a Custom Project:
Secure, high-velocity infrastructure and disruptive technological engineering. Contact our engineering team for high-tier development and proprietary systems:
[email protected]
💎 Smart Architecture | 🛡️ Secure by Design | ⭐ Trusted by Thousands
Sources:
Reported By: github.com
Extra Source Hub:
Undercode
