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Description

tmp is a temporary file and directory creator for node.js. Prior to 0.2.6, the tmp npm package contains a path traversal vulnerability that allows escaping the intended temporary directory when untrusted data flows into the prefix, postfix, or dir options. By embedding traversal sequences (e.g., ../) or path separators in these parameters, attackers can cause files to be created outside the configured temporary base directory at attacker-controlled locations with the privileges of the running process. This vulnerability affects applications that pass user-controlled data to tmp's file/directory creation functions without proper input sanitization. This vulnerability is fixed in 0.2.6.

PUBLISHED Reserved 2026-05-07 | Published 2026-06-11 | Updated 2026-06-13 | Assigner GitHub_M




HIGH: 7.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P

Problem types

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Product status

< 0.2.6
affected

References

github.com/...de-tmp/security/advisories/GHSA-ph9p-34f9-6g65 exploit

github.com/...de-tmp/security/advisories/GHSA-ph9p-34f9-6g65

cve.org (CVE-2026-44705)

nvd.nist.gov (CVE-2026-44705)

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