OpenClaw versions prior to 2026.2.19 contain a command injection vulnerability in the Lobster extension tool execution that uses Windows shell fallback with shell: true after spawn failures. Attackers can inject shell metacharacters in command arguments to execute arbitrary commands when subprocess launch fails with EINVAL or ENOENT errors.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
References 3
https://github.com/openclaw/openclaw/commit/ba7be018da354ea9f803ed356d20464df04…
disclosure@vulncheck.com
https://github.com/openclaw/openclaw/security/advisories/GHSA-7fcc-cw49-xm78
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/openclaw-command-injection-via-windows-she…
disclosure@vulncheck.com