CVE-2025-54798

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.

Weakness

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

Potential Mitigations

• Follow the principle of least privilege when assigning access rights to entities in a software system.
• Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/132.html
• https://cwe.mitre.org/data/definitions/17.html
• https://cwe.mitre.org/data/definitions/35.html
• https://cwe.mitre.org/data/definitions/76.html

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://github.com/raszi/node-tmp/security/advisories/GHSA-52f5-9888-hmc6