CVE-2026-31995

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Cuando los fallos de spawn activan la reserva de shell con shell: true, los atacantes pueden explotar la interpretaci\u00f3n de comandos de cmd.exe para ejecutar comandos maliciosos controlando los argumentos del flujo de trabajo."}], "id": "CVE-2026-31995", "lastModified": "2026-06-17T10:34:54.087", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 4.2, "source": "disclosure@vulncheck.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "HIGH", "attackRequirements": "NONE", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 5.8, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "disclosure@vulncheck.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-31995", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-03-19T13:38:02.703771Z", "version": "2.0.3"}}]}, "published": "2026-03-19T02:16:04.707", "references": [{"source": "disclosure@vulncheck.com", "tags": ["Patch"], "url": "https://github.com/openclaw/openclaw/commit/ba7be018da354ea9f803ed356d20464df0437916"}, {"source": "disclosure@vulncheck.com", "tags": ["Vendor Advisory"], "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-fg3m-vhrr-8gj6"}, {"source": "disclosure@vulncheck.com", "tags": ["Third Party Advisory"], "url": "https://www.vulncheck.com/advisories/openclaw-command-injection-via-windows-shell-fallback-in-lobster-extension"}], "sourceIdentifier": "disclosure@vulncheck.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-78"}], "source": "disclosure@vulncheck.com", "type": "Secondary"}]}

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2026.1.21,2026.2.19)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "2026.2.19"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "OpenClaw", "source": "cna", "vendor": "OpenClaw"}, "product": "openclaw", "vendor": "openclaw"}], "analysis": {"en": {"generated_at": "2026-03-19T19:22:13.655289+00:00", "value": {"mitigation_remediation": ["Apply an update to OpenClaw 2026.2.19 or later to remove the vulnerable fallback.", "If an update is not yet available, disable or remove the Lobster extension in the OpenClaw configuration to prevent the fallback mechanism from being used.", "As a temporary measure, configure the application to avoid triggering the shell fallback by ensuring spawn operations succeed or by setting shell:false, reducing the attack surface.", "Verify that the application is running on a patched Windows OS and that no unauthorized command execution is occurring.", "Monitor relevant security advisories and consider implementing network segmentation to limit potential lateral movement if exploitation occurs."], "summary": {"action": "Patch Immediately", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "Affected vendor is OpenClaw. Versions older than 2026.2.19, specifically any release from 2026.1.21 up to but not including 2026.2.19, are vulnerable. The issue manifests on Windows operating systems that run the OpenClaw platform and employ the Lobster extension.", "description_and_impact": "The vulnerability resides in the Lobster extension of OpenClaw, where a Windows shell fallback is activated when a spawn failure occurs and the shell option is set to true. This path incorrectly handles tool\u2011provided arguments, allowing an attacker to inject arbitrary commands. The defect maps to CWE\u201178 (OS Command Injection) and enables arbitrary command execution on the host system, compromising confidentiality, integrity, and availability of the affected machine.", "risk_and_exploitability": "The CVSS base score is 5.8, indicating moderate severity. The EPSS score is below 1%, suggesting the exploit is unlikely to be widespread or currently in use, and the vulnerability is not listed in the CISA KEV catalog. Exploitation requires an attacker to supply malicious workflow arguments to the Lobster extension; when the fallback to cmd.exe is triggered, the attacker can remotely or locally execute commands. Because the flaw is discovered within the application\u2019s Windows shell handling, an attacker with sufficient input control can achieve full command execution, but no evidence of active exploitation exists yet."}}}}, "created": "2026-03-19T08:54:50.837289+00:00", "updated": "2026-03-25T11:55:36.333255+00:00", "vendors": ["openclaw", "openclaw$PRODUCT$openclaw"]}