Command Injection Vulnerability in OpenClaw Package via Lobster Tool Execution

openclaw Updated 04 Mar 2026

Summary

03/03/2026

Disclosed on

HIGH

Severity

Yes i

Fix available

High

Severity

8.6

CVSS Score

GHSA-7fcc-cw49-xm78: OpenClaw has command injection via Windows shell fallback in Lobster tool execution. Affects openclaw versions < 2026.2.19. Fixed in 2026.2.19. How to fix ↓

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Background

OpenClaw is an open-source tool designed for executing various extensions and scripts within a user-friendly interface. It leverages Node.js and npm for package management, allowing developers to extend its functionality through plugins. The Lobster extension is one such tool that facilitates the execution of commands. However, a recent vulnerability has been identified that exposes users to command injection risks when using the Lobster tool on Windows systems.

Vulnerability Detail

The vulnerability arises from the Lobster extension's reliance on a Windows shell fallback mechanism (shell: true) when subprocess launches fail due to errors like EINVAL or ENOENT. This fallback allows shell metacharacters in command arguments to be interpreted by the shell, leading to potential command injection attacks. An attacker could exploit this flaw to execute arbitrary commands on the host system, posing significant security risks.

How To Fix

Latest published version: 2026.10.6 as of 22 Oct 2026

npm install openclaw@2026.10.6

Upgrading to it may include breaking changes; the version below is the minimum fixed release for this vulnerability.

If you need the minimum change

2026.2.19

This is the first release that contains the fix.

npm install openclaw@2026.2.19

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Workaround

As a temporary workaround, users can avoid using the Lobster tool until they have updated to the patched version. Additionally, users should sanitize any input that may be passed to the Lobster tool to mitigate the risk of command injection.

Conclusion

The command injection vulnerability in the OpenClaw package via the Lobster tool execution poses significant risks to users, particularly on Windows systems. It is crucial for users to update to the patched version 2026.2.19 to mitigate these risks. Regular monitoring for vulnerabilities using tools like Vulert can help maintain the security of your applications.

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