AI agent vulnerability · OpenClaw

CVE-2026-31995: OpenClaw has Windows Lobster shell fallback command injection in constrained fallback path

mediumCVSS 4.0 5.1GHSA-fg3m-vhrr-8gj6

Summary On Windows, the Lobster extension previously retried certain spawn failures (ENOENT/EINVAL) with shell: true for wrapper compatibility. In that fallback path, tool-provided arguments could be interpreted by cmd.exe if fallback was triggered.

Published Mar 3, 2026 · Updated Mar 19, 2026

Affected packages

openclaw

Ecosystem: npm
Affected: >= 2026.1.21, <= 2026.2.17
Fixed in: 2026.2.19
Check: npm ls openclaw

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

Summary

On Windows, the Lobster extension previously retried certain spawn failures (ENOENT/EINVAL) with shell: true for wrapper compatibility. In that fallback path, tool-provided arguments could be interpreted by cmd.exe if fallback was triggered.

Affected Packages / Versions

Package: openclaw (npm)
Latest published version at triage: 2026.2.17
Affected range: >= 2026.1.21 <= 2026.2.17
Patched version: 2026.2.19 (pre-set for next release)

Fix

The Windows shell fallback was removed. Wrapper compatibility is preserved by resolving .cmd/.bat shims to a concrete Node entrypoint (or executable) and executing with explicit argv (no shell). If a safe entrypoint cannot be resolved, execution now fails closed with a guided error.

Fix Commit(s)

ba7be018da354ea9f803ed356d20464df0437916

Severity Context

This issue requires Windows plus fallback-triggering conditions, and argument control through a local operator-defined workflow.

OpenClaw thanks @tdjackey for reporting.

Credited to tdjackey.

References

How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology

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