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Thu, 11 Jun 2026 19:30:00 +0000
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ssvc
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Thu, 11 Jun 2026 16:45:00 +0000
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| 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. | |
| Title | tmp: Type-confusion bypass of _assertPath in tmp@0.2.6 allows path traversal via non-string prefix/postfix/template | |
| Weaknesses | CWE-20 CWE-22 |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-06-11T18:24:22.459Z
Reserved: 2026-06-02T18:30:51.282Z
Link: CVE-2026-49982
Updated: 2026-06-11T18:24:08.617Z
Status : Received
Published: 2026-06-11T17:16:35.227
Modified: 2026-06-11T19:16:47.187
Link: CVE-2026-49982
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