Vulnerability-Lookup

GHSA-FG3M-VHRR-8GJ6

Vulnerability from github – Published: 2026-03-03 23:19 – Updated: 2026-03-19 21:24

Summary

OpenClaw has Windows Lobster shell fallback command injection in constrained fallback path

Details

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.

Severity ?

5.1 (Medium)


                  
                    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Show details on source website

JSON

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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 2026.2.17"
      },
      "package": {
        "ecosystem": "npm",
        "name": "openclaw"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2026.1.21"
            },
            {
              "fixed": "2026.2.19"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-31995"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-78"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-03T23:19:08Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Summary\nOn 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.\n\n### Affected Packages / Versions\n- Package: `openclaw` (npm)\n- Latest published version at triage: `2026.2.17`\n- Affected range: `\u003e= 2026.1.21 \u003c= 2026.2.17`\n- Patched version: `2026.2.19` (pre-set for next release)\n\n### Fix\nThe 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.\n\n### Fix Commit(s)\n- `ba7be018da354ea9f803ed356d20464df0437916`\n\n### Severity Context\nThis issue requires Windows plus fallback-triggering conditions, and argument control through a local operator-defined workflow. \n\nOpenClaw thanks @tdjackey for reporting.",
  "id": "GHSA-fg3m-vhrr-8gj6",
  "modified": "2026-03-19T21:24:43Z",
  "published": "2026-03-03T23:19:08Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-fg3m-vhrr-8gj6"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31995"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openclaw/openclaw/commit/ba7be018da354ea9f803ed356d20464df0437916"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/openclaw/openclaw"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/openclaw-command-injection-via-windows-shell-fallback-in-lobster-extension"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "OpenClaw has Windows Lobster shell fallback command injection in constrained fallback path"
}

CVE-2026-31995 (GCVE-0-2026-31995)

Vulnerability from cvelistv5 – Published: 2026-03-19 01:00 – Updated: 2026-03-19 13:38 X_Open Source

Title

OpenClaw 2026.1.21 < 2026.2.19 - Command Injection via Windows Shell Fallback in Lobster Extension

Summary

OpenClaw versions 2026.1.21 prior to 2026.2.19 contain a command injection vulnerability in the Lobster extension's Windows shell fallback mechanism that allows attackers to inject arbitrary commands through tool-provided arguments. When spawn failures trigger shell fallback with shell: true, attackers can exploit cmd.exe command interpretation to execute malicious commands by controlling workflow arguments.

Severity ?

5.8 (Medium)


                        
                          CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N

5.3 (Medium)


                        
                          CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L

CWE

CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') (CWE-78)

Assigner

VulnCheck

References

URL

Tags

	https://github.com/openclaw/openclaw/security/adv…	third-party-advisory
	https://github.com/openclaw/openclaw/commit/ba7be…	patch
	https://www.vulncheck.com/advisories/openclaw-com…	third-party-advisory

Impacted products

	Vendor	Product	Version
	OpenClaw	OpenClaw	Affected: 2026.1.21 , < 2026.2.19 (semver) Unaffected: 2026.2.19 (semver)

Date Public ?

2026-02-21 00:00

Credits

tdjackey

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-FG3M-VHRR-8GJ6

Summary

Affected Packages / Versions

Fix

Fix Commit(s)

Severity Context

CVE-2026-31995 (GCVE-0-2026-31995)

Tags

Sightings

Nomenclature