CVE-2026-49411

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{"affected": [{"affectedData": [{"product": "deno", "vendor": "denoland", "versions": [{"status": "affected", "version": "< 2.8.0"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:deno:deno:*:*:*:*:*:*:*:*", "matchCriteriaId": "CCC58C9A-9D40-4DEA-B856-50BBDEB3A701", "versionEndExcluding": "2.8.0", "versionStartIncluding": "2.7.14", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to 2.8.0, the Node.js compatibility TCP path checked the permission against the original hostname string before resolution and then did not re-check after resolution. A caller could therefore pass a numeric alias of an IP address (for example the decimal integer 2130706433 or the hex form 0x7f000001, both of which resolve to 127.0.0.1) and reach the denied destination through node:net.connect or node:http.request's { host, port } options form. This vulnerability is fixed in 2.8.0."}, {"lang": "es", "value": "Deno es un entorno de ejecuci\u00f3n de JavaScript, TypeScript y WebAssembly. Antes de la versi\u00f3n 2.8.0, la ruta TCP de compatibilidad con Node.js verificaba el permiso contra la cadena de nombre de host original antes de la resoluci\u00f3n y luego no volv\u00eda a verificar despu\u00e9s de la resoluci\u00f3n. Un llamador podr\u00eda, por lo tanto, pasar un alias num\u00e9rico de una direcci\u00f3n IP (por ejemplo, el entero decimal 2130706433 o la forma hexadecimal 0x7f000001, ambos de los cuales se resuelven a 127.0.0.1) y alcanzar el destino denegado a trav\u00e9s de node:net.connect o la forma de opciones { host, port } de node:http.request. Esta vulnerabilidad se corrige en la versi\u00f3n 2.8.0."}], "id": "CVE-2026-49411", "lastModified": "2026-10-25T23:10:00.167", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.0, "impactScore": 4.0, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-49411", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-26T18:55:45.500229Z", "version": "2.0.3"}}]}, "published": "2026-06-23T18:18:03.440", "references": [{"source": "security-advisories@github.com", "tags": ["Exploit", "Mitigation", "Third Party Advisory"], "url": "https://github.com/denoland/deno/security/advisories/GHSA-v8fw-85r8-5m23"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Mitigation", "Third Party Advisory"], "url": "https://github.com/denoland/deno/security/advisories/GHSA-v8fw-85r8-5m23"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-284"}], "source": "security-advisories@github.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,2.8.0)"}}], "enrichment": {"confidence": 82.0, "confidence_source": "matching", "scores": [{"score": 82.0, "source": "matching"}]}, "original": {"product": "deno", "source": "cna", "vendor": "denoland"}, "product": "deno", "vendor": "deno"}], "created": "2026-06-23T20:00:07.456330+00:00", "updated": "2026-08-13T20:15:03.199671+00:00", "vendors": ["deno", "deno$PRODUCT$deno"]}