CVE-2026-44705 HIGH

CVE-2026-44705: tmp: Path Traversal via unsanitized prefix/postfix enables directory escape

Vendor Raszi
Product node-tmp
Weakness CWE-22 · Path traversal
Published June 11, 2026
Last update June 13, 2026

CVSS base score

7.7/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS: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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

June 11, 2026 CVE published
June 13, 2026 Record updated