CVE-2025-54798: tmp does not restrict arbitrary temporary file / directory write via symbolic link `dir` parameter

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-08-07 · updated 2026-06-17
Weakness: CWE-59

Description

tmp is a temporary file and directory creator for node.js. In versions 0.2.3 and below, tmp is vulnerable to an arbitrary temporary file / directory write via symbolic link dir parameter. This is fixed in version 0.2.4.

Affected products

raszi node-tmp: before 0.2.4 — fixed in 0.2.4
Npm Tmp: before 0.2.4 — fixed in 0.2.4

How to fix

Upgrade to a fixed version: raszi node-tmp 0.2.4; Npm Tmp 0.2.4. Check the vendor advisory for mitigations.

References

https://github.com/raszi/node-tmp/commit/188b25e529496e37adaf1a1d9dccb40019a08b1b
https://github.com/raszi/node-tmp/issues/207
https://github.com/raszi/node-tmp/security/advisories/GHSA-52f5-9888-hmc6
https://lists.debian.org/debian-lts-announce/2025/08/msg00007.html
https://github.com/raszi/node-tmp/security/advisories/GHSA-52f5-9888-hmc6

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