Compliance Impact

CVE-2026-41377 is a fail-open security vulnerability in OpenClaw's plugin installation process that allows operators to bypass security scan failures and install untrusted plugins if they choose to proceed despite visible scan warnings.

This vulnerability could potentially impact compliance with common standards and regulations such as GDPR and HIPAA because it allows the installation of untrusted or potentially malicious plugins, which may lead to unauthorized access, data integrity issues, or exposure of sensitive information.

However, the vulnerability requires explicit operator approval to proceed with the installation despite warnings, and the scan failure is visible to the user rather than silent, which somewhat mitigates the risk.

The fail-open behavior means that security controls designed to prevent unsafe code installation can be bypassed, which may violate security best practices and regulatory requirements for ensuring system integrity and protecting sensitive data.

The issue has been addressed in version 2026.3.31 by enforcing a fail-closed policy that blocks installation when security scans fail or detect dangerous code patterns, thereby improving compliance posture by reducing the risk of installing untrusted code.

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Executive Summary

CVE-2026-41377 is a fail-open security vulnerability in OpenClaw versions before 2026.3.31 that affects the plugin installation process. When the security scan performed during plugin installation fails or detects dangerous code patterns, the system does not block the installation by default. Instead, it allows operators to proceed with installing potentially untrusted or malicious plugins if they choose to ignore the visible scan warnings.

This behavior is classified under CWE-636 (Not Failing Securely) and CWE-754 (Improper Check for Unusual or Exceptional Conditions), meaning the system falls back to a less secure state upon scan errors instead of failing safely by blocking the install.

The vulnerability allows attackers to exploit scan failures to install malicious plugins, posing a medium severity risk with a CVSS v4 base score of 5.1. The issue was fixed in version 2026.3.31 by enforcing a fail-closed policy that blocks plugin, bundle, and file installs if the security scan fails or finds critical dangerous code patterns.

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Impact Analysis

This vulnerability can impact you by allowing the installation of untrusted or malicious plugins if the security scan during installation fails and the operator chooses to proceed despite warnings. This can lead to the execution of harmful code within your OpenClaw environment.

Because the system does not automatically block installations on scan failures, attackers can exploit this to bypass security controls and introduce potentially dangerous plugins that could compromise the integrity and security of your system.

However, the risk is somewhat mitigated by the fact that operator approval is required to proceed with the installation despite visible scan failures, and the vulnerability does not allow silent or automatic installation of malicious plugins.

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Detection Guidance

The vulnerability in OpenClaw involves a fail-open security scan during plugin installation, where scan failures do not block installation. Detection involves monitoring plugin installation attempts for security scan failures or warnings about dangerous code patterns.

OpenClaw's updated system logs warning messages when suspicious or dangerous code patterns are found during plugin, bundle, or file installation scans. These logs include detailed messages about the scan failure or dangerous code findings.

To detect exploitation attempts or the presence of untrusted plugins, you can monitor installation logs for entries indicating scan failures or blocked installs with codes such as "security_scan_failed" or "security_scan_blocked".

Additionally, OpenClaw provides a command-line interface (CLI) for plugin installation that supports a flag `--dangerously-force-unsafe-install`. Monitoring usage of this flag can help identify attempts to override security blocks.

While specific commands for detection are not explicitly provided in the resources, you can use standard log inspection commands on your system, such as:

• grep or tail commands to search OpenClaw logs for keywords like "security_scan_failed", "security_scan_blocked", or "dangerous code patterns".
• Monitoring plugin installation commands for the presence of the `--dangerously-force-unsafe-install` flag.
• Reviewing plugin installation audit trails or logs to identify installations that proceeded despite scan warnings.

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Mitigation Strategies

The primary mitigation step is to upgrade OpenClaw to version 2026.3.31 or later, where the vulnerability has been fixed by enforcing a fail-closed policy on plugin installation scans.

This update blocks plugin, bundle, and file installations if the security scan fails or detects critical dangerous code patterns, preventing untrusted plugins from being installed.

Avoid proceeding with plugin installations when security scan warnings or failures are visible, unless you explicitly understand and accept the risks.

If you must override the security scan block due to false positives, use the controlled override flag `--dangerously-force-unsafe-install` cautiously, understanding that it does not bypass all security checks.

Regularly audit installed plugins and monitor installation logs for any suspicious activity or attempts to bypass security mechanisms.

Ensure operators are trained to recognize scan warnings and understand the importance of not ignoring them.

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