Vulnerability · Published Jun 11, 2026 · Assigned by GitHub_M
CVE-2026-44705tmp: Path Traversal via unsanitized prefix/postfix enables directory escape
High 7.7
In plain English
A high-severity path traversal in node-tmp from raszi. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | node-tmp | no fix listed | DEBIAN-CVE-2026-44705 |
| Debian:13 | node-tmp | no fix listed | DEBIAN-CVE-2026-44705 |
| Debian:14 | node-tmp | 0.2.7+dfsg+~0.2.6-1 | DEBIAN-CVE-2026-44705 |
| Ubuntu:22.04:LTS | node-tmp | no fix listed | UBUNTU-CVE-2026-44705 |
| Ubuntu:24.04:LTS | node-tmp | no fix listed | UBUNTU-CVE-2026-44705 |
| Ubuntu:25.10 | node-tmp | no fix listed | UBUNTU-CVE-2026-44705 |
| Ubuntu:26.04:LTS | node-tmp | no fix listed | UBUNTU-CVE-2026-44705 |
| Ubuntu:26.10 | node-tmp | no fix listed | UBUNTU-CVE-2026-44705 |
| npm | tmp | 0.2.6 | GHSA-ph9p-34f9-6g65 |
Affected products (as reported)
Weakness: CWE-22 · 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
References
- https://github.com/raszi/node-tmp/security/advisories/GHSA-ph9p-34f9-6g65 x_refsource_CONFIRM