{"id":"CVE-2026-49982","revision":"e5b17d4884a9439d909592391b95a921","records":[{"revision":"e5b17d4884a9439d909592391b95a921","observedAt":"2026-10-25T12:17:38.331+00:00","statement":{"source":"nvd","id":"CVE-2026-49982","aliases":[],"title":"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-…","description":"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.","state":0,"publishedAt":"2026-06-11T17:16:35.227+00:00","modifiedAt":"2026-06-17T10:55:49.797+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L","score":8.2,"severity":"HIGH"}],"references":["https://github.com/raszi/node-tmp/security/advisories/GHSA-7c78-jf6q-g5cm"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-49982","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-20","CWE-22"],"productCriteria":["cpe:2.3:a:raszi:tmp:0.2.6:*:*:*:*:node.js:*:*"],"sourceDates":{"published":"2026-06-11T17:16:35.227","lastModified":"2026-06-17T10:55:49.797"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-49982","identifiers":["CVE-2026-49982"]},"retained":false,"historicalAffected":[]}],"coverage":[]}