CVE-2026-49982

{"id": "CVE-2026-49982", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-49982", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-11T18:24:14.195781Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.2, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 4.2, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "raszi", "product": "node-tmp", "versions": [{"status": "affected", "version": "0.2.6"}]}]}], "published": "2026-06-11T17:16:35.227", "references": [{"url": "https://github.com/raszi/node-tmp/security/advisories/GHSA-7c78-jf6q-g5cm", "tags": ["Exploit", "Mitigation", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/raszi/node-tmp/security/advisories/GHSA-7c78-jf6q-g5cm", "tags": ["Exploit", "Mitigation", "Vendor Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-20"}, {"lang": "en", "value": "CWE-22"}]}], "descriptions": [{"lang": "en", "value": "tmp is a temporary file and directory creator for node.js. In version 0.2.6, the _assertPath guard added to tmp rejects only string values that contain the substring ... It is bypassed when prefix, postfix, or template is supplied as a non-string value (Array, Buffer, or any object) whose includes('..') returns falsy but whose stringification still contains ../. The value flows through Array.prototype.join/String coercion inside _generateTmpName and path.join(tmpDir, opts.dir, name), producing a final path that escapes tmpdir and creates a file or directory at an attacker-controlled location with the host process's privileges. This affects any application that forwards untrusted request data (a common pattern is JSON body fields or qs-parsed bracket-array query strings such as ?prefix[]=...) into tmp.file, tmp.fileSync, tmp.dir, tmp.dirSync, tmp.tmpName, or tmp.tmpNameSync without explicit type coercion. This vulnerability is fixed in 0.2.7."}, {"lang": "es", "value": "tmp es un creador de archivos y directorios temporales para node.js. En la versi\u00f3n 0.2.6, la protecci\u00f3n _assertPath a\u00f1adida a tmp rechaza solo valores de cadena que contienen la subcadena ... Se omite cuando prefix, postfix o template se suministra como un valor no-cadena (Array, Buffer o cualquier objeto) cuyo includes(\u2019..\u2019) devuelve falso pero cuya conversi\u00f3n a cadena a\u00fan contiene .. / . El valor fluye a trav\u00e9s de la coerci\u00f3n Array.prototype.join/String dentro de _generateTmpName y path.join(tmpDir, opts.dir, name), produciendo una ruta final que escapa de tmpdir y crea un archivo o directorio en una ubicaci\u00f3n controlada por el atacante con los privilegios del proceso anfitri\u00f3n. Esto afecta a cualquier aplicaci\u00f3n que reenv\u00eda datos de solicitud no confiables (un patr\u00f3n com\u00fan son los campos de cuerpo JSON o las cadenas de consulta de array entre corchetes analizadas por qs como ?prefix[]=...) a tmp.file, tmp.fileSync, tmp.dir, tmp.dirSync, tmp.tmpName o tmp.tmpNameSync sin coerci\u00f3n de tipo expl\u00edcita. Esta vulnerabilidad se corrige en 0.2.7."}], "lastModified": "2026-10-26T11:10:00.157", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:raszi:tmp:0.2.6:*:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "00D80707-0616-4761-A117-722DB74FA490"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}