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.
References
| Link | Resource |
|---|---|
| https://github.com/raszi/node-tmp/security/advisories/GHSA-7c78-jf6q-g5cm | Exploit Mitigation Vendor Advisory |
| https://github.com/raszi/node-tmp/security/advisories/GHSA-7c78-jf6q-g5cm | Exploit Mitigation Vendor Advisory |
Configurations
History
15 Jun 2026, 12:52
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:raszi:tmp:0.2.6:*:*:*:*:node.js:*:* | |
| First Time |
Raszi tmp
Raszi |
|
| References | () https://github.com/raszi/node-tmp/security/advisories/GHSA-7c78-jf6q-g5cm - Exploit, Mitigation, Vendor Advisory |
11 Jun 2026, 19:16
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/raszi/node-tmp/security/advisories/GHSA-7c78-jf6q-g5cm - |
11 Jun 2026, 17:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-06-11 17:16
Updated : 2026-06-15 12:52
NVD link : CVE-2026-49982
Mitre link : CVE-2026-49982
CVE.ORG link : CVE-2026-49982
JSON object : View
Products Affected
raszi
- tmp