CVE-2026-34425

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Attackers can craft commands such as piped execution, command substitution, or subshell invocation to bypass the validateScriptFileForShellBleed() validation checks and execute arbitrary script content that would otherwise be blocked."}, {"lang": "es", "value": "Las versiones de OpenClaw anteriores al commit 8aceaf5 contienen una vulnerabilidad de omisi\u00f3n de validaci\u00f3n previa al vuelo en la protecci\u00f3n contra shell-bleed que permite a los atacantes ejecutar contenido de script bloqueado mediante el uso de formas de comando encadenadas o complejas que el analizador no reconoce. Los atacantes pueden elaborar comandos como ejecuci\u00f3n encadenada, sustituci\u00f3n de comandos o invocaci\u00f3n de subshell para omitir las comprobaciones de validaci\u00f3n de validateScriptFileForShellBleed() y ejecutar contenido de script arbitrario que de otro modo estar\u00eda bloqueado."}], "id": "CVE-2026-34425", "lastModified": "2026-07-24T21:10:00.143", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.5, "source": "disclosure@vulncheck.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 5.3, "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:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/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": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "disclosure@vulncheck.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-34425", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-04-03T13:00:24.379911Z", "version": "2.0.3"}}]}, "published": "2026-04-02T19:21:31.507", "references": [{"source": "disclosure@vulncheck.com", "tags": ["Patch"], "url": "https://github.com/openclaw/openclaw/commit/8aceaf5d0f0ec552b75a792f7f0a3bfa5b091513"}, {"source": "disclosure@vulncheck.com", "tags": ["Vendor Advisory"], "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-fvx6-pj3r-5q4q"}, {"source": "disclosure@vulncheck.com", "tags": ["Third Party Advisory"], "url": "https://www.vulncheck.com/advisories/openclaw-shell-bleed-protection-preflight-validation-bypass"}], "sourceIdentifier": "disclosure@vulncheck.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-184"}], "source": "disclosure@vulncheck.com", "type": "Secondary"}]}

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0,8aceaf5d0f0ec552b75a792f7f0a3bfa5b091513)"}}], "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": "2026-04-02T22:24:30.826347+00:00", "value": {"mitigation_remediation": ["Update OpenClaw to the commit that contains the fix or to a later released version.", "Verify that the shell\u2011bleed protection module is enabled and functioning in the application configuration.", "Validate and sanitize any command strings entered by users to avoid complex piping or subshell usage.", "Monitor logs for unexpected script execution attempts and review access controls around scripting features."], "summary": {"action": "Apply patch", "impact": "Arbitrary execution of otherwise blocked script content"}, "threat_synthesis": {"affected_systems": "All installations of OpenClaw running a version before the commit identified by 8aceaf5d0f0ec552b75a792f7f0a3bfa5b091513 are vulnerable. The vulnerability affects the default Node.js implementation bundled with OpenClaw; any environment exposing the script analysis functionality is at risk. Upgrading to the mentioned commit or later releases resolves the issue.", "description_and_impact": "OpenClaw implements shell\u2011bleed protection that blocks execution of risky script fragments. A flaw in the preflight validation logic allows attackers to craft piped, substituted, or subshell commands that evade the validateScriptFileForShellBleed check, enabling the execution of script content that would normally be prevented. This results in arbitrary code execution within the application\u2019s scripting engine, potentially compromising availability, confidentiality, and integrity.", "risk_and_exploitability": "The CVSS score of 5.3 indicates a moderate severity, but the lack of an EPSS score and exclusion from KEV suggest limited evidence of active exploitation yet. The flaw can be leveraged by an attacker who can supply crafted command strings to the application, thus the likely attack vector is through application\u2011side script input. If the application processes user\u2011supplied command fragments, an attacker could trigger the bypass and execute arbitrary code."}}}}, "created": "2026-04-03T07:31:55.494884+00:00", "updated": "2026-04-03T09:16:55.228576+00:00", "vendors": ["openclaw", "openclaw$PRODUCT$openclaw"]}