{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:raszi:tmp:0.2.6:*:*:*:*:node.js:*:*",
            "extracted_events": [
              {
                "introduced": "0.2.6"
              },
              {
                "last_affected": "0.2.6"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "CPE_STRING"
            ]
          },
          "events": [
            {
              "introduced": "41f71598d03f104a67e0448a7cb9bd4efcdd5980"
            },
            {
              "last_affected": "41f71598d03f104a67e0448a7cb9bd4efcdd5980"
            }
          ],
          "repo": "https://github.com/raszi/node-tmp",
          "type": "GIT"
        }
      ],
      "versions": [
        "0.2.6"
      ]
    }
  ],
  "aliases": [
    "GHSA-7c78-jf6q-g5cm"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-20",
      "CWE-22"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49982.json"
  },
  "details": "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.",
  "id": "CVE-2026-49982",
  "modified": "2026-07-08T05:36:43.799323370Z",
  "published": "2026-06-11T15:45:00.685Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49982.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/raszi/node-tmp/security/advisories/GHSA-7c78-jf6q-g5cm"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-49982"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "tmp: Type-confusion bypass of _assertPath in tmp@0.2.6 allows path traversal via non-string prefix/postfix/template"
}