CVE-2026-27523

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Attackers can craft bind source paths that appear within allowed roots but resolve outside sandbox boundaries once missing leaf components are created, weakening bind-source isolation enforcement."}, {"lang": "es", "value": "Versiones de OpenClaw anteriores a 2026.2.24 contienen una vulnerabilidad de validaci\u00f3n de enlace (bind) de sandbox que permite a los atacantes eludir las comprobaciones de ra\u00edces permitidas (allowed-root) y rutas bloqueadas (blocked-path) a trav\u00e9s de directorios padre con enlaces simb\u00f3licos (symlinked parent directories) con rutas hoja (leaf paths) inexistentes. Los atacantes pueden crear rutas de origen de enlace (bind source paths) que parecen estar dentro de ra\u00edces permitidas pero se resuelven fuera de los l\u00edmites del sandbox una vez que se crean los componentes hoja (leaf components) que faltan, debilitando la aplicaci\u00f3n del aislamiento de origen de enlace (bind-source isolation enforcement)."}], "id": "CVE-2026-27523", "lastModified": "2026-06-17T10:27:18.337", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/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": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.9, "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:L/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-2026-27523", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-03-18T15:38:58.159599Z", "version": "2.0.3"}}]}, "published": "2026-03-18T02:16:23.420", "references": [{"source": "disclosure@vulncheck.com", "tags": ["Patch"], "url": "https://github.com/openclaw/openclaw/commit/b5787e4abba0dcc6baf09051099f6773c1679ec1"}, {"source": "disclosure@vulncheck.com", "tags": ["Vendor Advisory"], "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-m8v2-6wwh-r4gc"}, {"source": "disclosure@vulncheck.com", "tags": ["Third Party Advisory"], "url": "https://www.vulncheck.com/advisories/openclaw-sandbox-bind-validation-bypass-via-symlink-parent-missing-leaf-paths"}], "sourceIdentifier": "disclosure@vulncheck.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}], "source": "disclosure@vulncheck.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": ["node.js"], "status": "affected", "versions": {"scheme": "semver", "value": "[0,2026.2.24)"}}], "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": "2026-03-18T03:21:26.035719+00:00", "value": {"mitigation_remediation": ["Apply the patch from commit b5787e4 to upgrade OpenClaw to 2026.2.24 or later", "Verify that bind source path validation is functioning correctly in your environment", "Consider adding custom validation to reject symlinked parent directories with missing leaf components", "Perform testing to confirm sandbox isolation remains intact"], "summary": {"action": "Immediate Patch", "impact": "Sandbox Escape"}, "threat_synthesis": {"affected_systems": "The affected product is OpenClaw (vendor OpenClaw). All releases prior to 2026.2.24 are vulnerable. The product is listed under CPE \"cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*\".", "description_and_impact": "OpenClaw versions prior to 2026.2.24 contain a sandbox bind validation vulnerability that permits attackers to bypass allowed-root and blocked-path checks by exploiting symlinked parent directories combined with non-existent leaf components. Because bind source paths originally appear inside sandbox roots but resolve to locations outside the sandbox once missing leaf components are created, the application\u2019s isolation enforcement is weakened. This enables an attacker to read, write, or execute files outside the intended sandbox boundaries, effectively escaping the sandbox and potentially gaining elevated privileges or compromising system integrity. The weakness corresponds to CWE-22, which deals with path traversal and file disclosure errors.", "risk_and_exploitability": "The vulnerability has a CVSS score of 6.9, indicating moderate severity. No EPSS score is available, and the vulnerability is not listed in the CISA KEV catalog. Based on the description, the attack would likely require the attacker to influence the bind source paths used by OpenClaw, suggesting local or privileged access is necessary. However, the vulnerability renders the sandbox less reliable, increasing risk if an attacker gains control of any component that can configure bind paths."}}}}, "created": "2026-03-18T10:42:06.397902+00:00", "updated": "2026-03-24T10:53:35.227185+00:00", "vendors": ["openclaw", "openclaw$PRODUCT$openclaw"]}