CVE-2026-75858

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The tool's approval_requirement() returns ApprovalRequirement::Auto, which the engine treats as 'never prompt,' causing arbitrary model-supplied Python code to run in a python3 interpreter without consulting the user's configured --approval-policy and without any approval prompt or audit step. An attacker can induce the agent to execute arbitrary code via prompt injection in untrusted content the agent reads (a web page, fetched URL, repository file, or MCP tool result); the companion rlm_open tool can stage such content. Code runs on the user's machine at the user's privilege level. Fixed in 0.8.64."}, {"lang": "es", "value": "Las versiones de CodeWhale (paquetes codewhale / codewhale-tui) >= 0.8.41 y < 0.8.64 contienen una vulnerabilidad de ejecuci\u00f3n remota de c\u00f3digo en la herramienta rlm_eval. La funci\u00f3n approval_requirement() de la herramienta devuelve ApprovalRequirement::Auto, que el motor trata como \u2019nunca preguntar\u2019, lo que provoca que c\u00f3digo Python arbitrario suministrado por el modelo se ejecute en un int\u00e9rprete python3 sin consultar la pol\u00edtica de aprobaci\u00f3n (--approval-policy) configurada por el usuario y sin ninguna solicitud de aprobaci\u00f3n o paso de auditor\u00eda. Un atacante puede inducir al agente a ejecutar c\u00f3digo arbitrario a trav\u00e9s de inyecci\u00f3n de prompt en contenido no confiable que el agente lee (una p\u00e1gina web, URL obtenida, archivo de repositorio o resultado de herramienta MCP); la herramienta complementaria rlm_open puede preparar dicho contenido. El c\u00f3digo se ejecuta en la m\u00e1quina del usuario con el nivel de privilegio del usuario. Corregido en 0.8.64."}], "id": "CVE-2026-75858", "lastModified": "2026-10-22T22:10:00.250", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "disclosure@vulncheck.com", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.5, "baseSeverity": "HIGH", "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": "PASSIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/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": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "disclosure@vulncheck.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-75858", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-08-18T17:58:18.257877Z", "version": "2.0.3"}}]}, "published": "2026-08-18T16:18:21.653", "references": [{"source": "disclosure@vulncheck.com", "url": "https://github.com/Hmbown/CodeWhale/commit/57f3c89471e27ac4032d9791f6885e5d4408c381"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/Hmbown/CodeWhale/security/advisories/GHSA-wrj3-vj8c-784f"}, {"source": "disclosure@vulncheck.com", "url": "https://www.vulncheck.com/advisories/codewhale-rlm-eval-before-remote-code-execution"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/Hmbown/CodeWhale/security/advisories/GHSA-wrj3-vj8c-784f"}], "sourceIdentifier": "disclosure@vulncheck.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-94"}], "source": "disclosure@vulncheck.com", "type": "Secondary"}]}

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