CVE-2025-62410

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{"affected": [{"affectedData": [{"product": "happy-dom", "vendor": "capricorn86", "versions": [{"status": "affected", "version": "< 20.0.2"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In versions before 20.0.2, it was found that --disallow-code-generation-from-strings is not sufficient for isolating untrusted JavaScript in happy-dom. The untrusted script and the rest of the application still run in the same Isolate/process, so attackers can deploy prototype pollution payloads to hijack important references like \"process\" in the example below, or to hijack control flow via flipping checks of undefined property. This vulnerability is due to an incomplete fix for CVE-2025-61927. The vulnerability is fixed in 20.0.2."}, {"lang": "es", "value": "En versiones anteriores a la 20.0.2, se descubri\u00f3 que --disallow-code-generation-from-strings no es suficiente para aislar JavaScript no confiable en happy-dom. El script no confiable y el resto de la aplicaci\u00f3n todav\u00eda se ejecutan en el mismo Isolate/proceso, por lo que los atacantes pueden desplegar cargas \u00fatiles de contaminaci\u00f3n de prototipos para secuestrar referencias importantes como 'process' en el ejemplo siguiente, o para secuestrar el flujo de control mediante la inversi\u00f3n de las comprobaciones de propiedades indefinidas. Esta vulnerabilidad se debe a una correcci\u00f3n incompleta para CVE-2025-61927. La vulnerabilidad est\u00e1 corregida en la 20.0.2."}], "id": "CVE-2025-62410", "lastModified": "2026-10-08T11:10:00.250", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 9.4, "baseSeverity": "CRITICAL", "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": "HIGH", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "userInteraction": "PASSIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-62410", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2025-10-15T18:15:58.306559Z", "version": "2.0.3"}}]}, "published": "2025-10-15T18:15:40.567", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/capricorn86/happy-dom/commit/f4bd4ebe3fe5abd2be2bcea1c07043c8b0b70eea"}, {"source": "security-advisories@github.com", "url": "https://github.com/capricorn86/happy-dom/security/advisories/GHSA-qpm2-6cq5-7pq5"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-1321"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"bugzilla": {"description": "happy-dom: --disallow-code-generation-from-strings is not sufficient for isolating untrusted JavaScript in happy-dom", "id": "2404254", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2404254"}, "csaw": false, "cvss3": {"cvss3_base_score": "10.0", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-1321", "details": ["No description is available for this CVE."], "name": "CVE-2025-62410", "package_state": [{"cpe": "cpe:/a:redhat:openshift_devspaces:3:", "fix_state": "Under investigation", "package_name": "devspaces/traefik-rhel9", "product_name": "Red Hat OpenShift Dev Spaces"}], "public_date": "2025-10-15T17:16:21Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-62410\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-62410\nhttps://github.com/capricorn86/happy-dom/commit/f4bd4ebe3fe5abd2be2bcea1c07043c8b0b70eea\nhttps://github.com/capricorn86/happy-dom/security/advisories/GHSA-qpm2-6cq5-7pq5"], "statement": "The impact is CRITICAL because disabling dynamic code generation alone does not create a separate execution context. Trusted and untrusted code still share the same global prototypes and intrinsic objects; a polluted prototype is immediately visible to the rest of the process.\nThe flaw arises from incomplete sandboxing. The mitigation for dynamic code generation only blocks eval and Function but does not isolate execution contexts. As both trusted and untrusted scripts share prototypes in one isolate, a polluted built-in can redirect internal lookups or override constructors to expose privileged globals. This enables arbitrary command execution from within the supposedly restricted environment.", "threat_severity": "Critical"}

{"created": "2025-10-20T13:25:23.050203+00:00", "updated": "2025-10-20T13:25:23.050229+00:00", "vendors": ["capricorn86", "capricorn86$PRODUCT$happy-dom"]}