CVE-2025-48934

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When looking at the documentation of the `--deny-env` option this might lead to a false impression that variables listed in the option are impossible to read. Software relying on the combination of both flags to allow access to most environment variables except a few sensitive ones will be vulnerable to malicious code trying to steal secrets using the `Deno.env.toObject()` method. Versions 2.1.13 and 2.2.13 contains a patch."}, {"lang": "es", "value": "Deno es un entorno de ejecuci\u00f3n de JavaScript, TypeScript y WebAssembly. En versiones anteriores a la 2.1.13 y la 2.2.13, el m\u00e9todo `Deno.env.toObject` ignora las variables listadas en la opci\u00f3n `--deny-env` del comando `deno run`. Al consultar la documentaci\u00f3n de la opci\u00f3n `--deny-env`, esto podr\u00eda dar la falsa impresi\u00f3n de que las variables listadas en ella son imposibles de leer. El software que utiliza la combinaci\u00f3n de ambos indicadores para acceder a la mayor\u00eda de las variables de entorno, excepto algunas sensibles, ser\u00e1 vulnerable a c\u00f3digo malicioso que intente robar secretos mediante el m\u00e9todo `Deno.env.toObject()`. Las versiones 2.1.13 y 2.2.13 contienen un parche."}], "id": "CVE-2025-48934", "lastModified": "2026-06-17T09:30:30.597", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "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": 5.5, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "PROOF_OF_CONCEPT", "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": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/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": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-48934", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-06-04T19:32:01.410953Z", "version": "2.0.3"}}]}, "published": "2025-06-04T20:15:24.163", "references": [{"source": "security-advisories@github.com", "tags": ["Product"], "url": "https://docs.deno.com/api/deno/~/Deno.Env.toObject"}, {"source": "security-advisories@github.com", "tags": ["Product"], "url": "https://docs.deno.com/runtime/fundamentals/security/#environment-variables"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/denoland/deno/commit/2959e083912420988066a001c2b2d6732a1b562f"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/denoland/deno/commit/946ccda1aa19a00c478a5e6826b75053b050d753"}, {"source": "security-advisories@github.com", "tags": ["Issue Tracking", "Patch"], "url": "https://github.com/denoland/deno/pull/29079"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/denoland/deno/security/advisories/GHSA-7w8p-chxq-2789"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/denoland/deno/security/advisories/GHSA-7w8p-chxq-2789"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-201"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

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