jn_jj_server is a static file server. jn_jj_server is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by placing "../" in the url.

Affected: npm: jn_jj_server

Affected versions of `jn_jj_server` resolve relative file paths, resulting in a directory traversal vulnerability. A malicious actor can use this vulnerability to access files outside of the intended directory root, which may result in the disclosure of private files on the vulnerable system.

**Example request:** ```http GET /../../../../../../../../../../etc/passwd HTTP/1.1 host:foo ```

## Recommendation

No patch is available for this vulnerability.

It is recommended that the package is only used for local development, and if the functionality is needed for production, a different package is used instead.