CVE-2026-28457

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Attackers who provide a crafted skill package with traversal sequences like ../ or absolute paths in the name field can write files outside the sandbox workspace root directory."}, {"lang": "es", "value": "Las versiones de OpenClaw anteriores a 2026.2.14 contienen una vulnerabilidad de salto de ruta en la duplicaci\u00f3n de habilidades de sandbox (debe estar habilitada) que utiliza el par\u00e1metro 'name' del 'frontmatter' de la habilidad sin sanitizar al copiar habilidades en el espacio de trabajo de la sandbox. Los atacantes que proporcionan un paquete de habilidad manipulado con secuencias de salto como ../ o rutas absolutas en el campo 'name' pueden escribir archivos fuera del directorio ra\u00edz del espacio de trabajo de la sandbox."}], "id": "CVE-2026-28457", "lastModified": "2026-06-17T10:28:40.553", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:L", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 4.2, "source": "disclosure@vulncheck.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.9, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.5, "impactScore": 5.8, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 5.6, "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": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "ACTIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/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-2026-28457", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-03-09T17:08:27.173780Z", "version": "2.0.3"}}]}, "published": "2026-03-05T22:16:18.227", "references": [{"source": "disclosure@vulncheck.com", "tags": ["Patch"], "url": "https://github.com/openclaw/openclaw/commit/3eb6a31b6fcf8268456988bfa8e3637d373438c2"}, {"source": "disclosure@vulncheck.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-xw4p-pw82-hqr7"}, {"source": "disclosure@vulncheck.com", "tags": ["Third Party Advisory"], "url": "https://www.vulncheck.com/advisories/openclaw-path-traversal-in-sandbox-skill-mirroring-via-name-parameter"}], "sourceIdentifier": "disclosure@vulncheck.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}], "source": "disclosure@vulncheck.com", "type": "Secondary"}]}

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,2026.2.14)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "OpenClaw", "source": "cna", "vendor": "OpenClaw"}, "product": "openclaw", "vendor": "openclaw"}], "analysis": {"en": {"generated_at": "2026-04-16T12:03:10.312756+00:00", "value": {"mitigation_remediation": ["Upgrade OpenClaw to version 2026.2.14 or later, which fixes the path traversal in sandbox skill mirroring.", "If an upgrade is not immediately possible, disable the sandbox skill mirroring feature to prevent the use of the vulnerable code path.", "Implement validation on the skill package name field to disallow path traversal sequences or absolute paths before copying to the sandbox directory."], "summary": {"action": "Immediate Patch", "impact": "Arbitrary file write outside sandbox"}, "threat_synthesis": {"affected_systems": "Affected systems include all OpenClaw installations running a version earlier than 2026.2.14. The vulnerability is tied to the OpenClaw product and is listed as affecting all builds before that release date, with no specific sub\u2011version constraints beyond the major release cutoff.", "description_and_impact": "The vulnerability is a path traversal flaw in the OpenClaw sandbox skill mirroring feature, where the name field supplied in a skill frontmatter is not sanitized before being written to disk. An attacker can supply a crafted skill package with traversal sequences such as \u201c../\u201d or absolute paths, causing the system to create or overwrite files outside the intended sandbox workspace. This can lead to arbitrary file creation or modification, potentially enabling the execution of malicious code or the compromise of system configuration files, depending on the permissions of the running process.", "risk_and_exploitability": "The CVSS score of 5.6 indicates a moderate impact, and the EPSS score of less than 1% reflects a low likelihood of widespread exploitation at present. The flaw is not listed in the CISA KEV catalog. Attackers would need to send a malicious skill package to a configured sandbox, implying a remote attack vector that requires the ability to upload or otherwise submit a skill. If the sandbox operates with elevated privileges, the potential for system compromise is significant; if it runs under restricted rights, the damage may be limited to files within the allowance of those permissions."}}}}, "created": "2026-03-06T15:00:24.208041+00:00", "updated": "2026-04-16T12:15:35.083594+00:00", "vendors": ["openclaw", "openclaw$PRODUCT$openclaw"]}