{"id":"CVE-2026-49411","sourceIdentifier":"security-advisories@github.com","published":"2026-06-23T18:18:03.440","lastModified":"2026-10-25T23:10:00.167","vulnStatus":"Modified","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 ejecución de JavaScript, TypeScript y WebAssembly. Antes de la versión 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 resolución y luego no volvía a verificar después de la resolución. Un llamador podría, por lo tanto, pasar un alias numérico de una dirección 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 través de node:net.connect o la forma de opciones { host, port } de node:http.request. Esta vulnerabilidad se corrige en la versión 2.8.0."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"denoland","product":"deno","versions":[{"version":"< 2.8.0","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":2.0,"impactScore":4.0}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-06-26T18:55:45.500229Z","id":"CVE-2026-49411","options":[{"exploitation":"poc"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-284"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"NVD-CWE-noinfo"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:deno:deno:*:*:*:*:*:*:*:*","versionStartIncluding":"2.7.14","versionEndExcluding":"2.8.0","matchCriteriaId":"CCC58C9A-9D40-4DEA-B856-50BBDEB3A701"}]}]}],"references":[{"url":"https://github.com/denoland/deno/security/advisories/GHSA-v8fw-85r8-5m23","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"]}]}