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

> Remote attackers can crash Node.js HTTP/2 servers using the find-my-way router by sending requests with malicious HTTP methods.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 28 Jul 2026
- **Updated:** 29 Jul 2026
- **Also known as:** CLSA-2026-1785291246, CLSA-2026-1792488967, CLSA-2026-1792489084, GHSA-c96f-x56v-gq3h, MINI-9p3p-m3qv-j7v3

## What is CVE-2026-47219?

CVE-2026-47219 is a high-severity denial of service vulnerability in delvedor find-my-way, published on 28 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official 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.

Weakness: CWE-248 (Uncaught Exception), CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2026-47219?

2 open source packages ship an affected version, including find-my-way.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `find-my-way` | npm | All versions | 9.7.0 |
| `find-my-way` | npm | All versions | 9.7.0 |

## How do I fix CVE-2026-47219?

Upgrade find-my-way to 9.7.0 or later.

## Is CVE-2026-47219 being exploited?

There is no known exploitation of CVE-2026-47219 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-47219 and fix it if it is affected.

What it is: CVE-2026-47219 is a high-severity denial of service vulnerability in delvedor find-my-way, published on 28 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-47219 in the wild and no public exploit code.

Affected packages and fixed versions:
- find-my-way (npm): affected all versions; fixed in 9.7.0
- find-my-way (npm): affected all versions; fixed in 9.7.0

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-47219/ (Markdown: https://insights.sbomify.com/CVE-2026-47219/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-47219
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-47219
- OSV: https://osv.dev/vulnerability/CVE-2026-47219

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-47219/
Summaries are generated and may contain mistakes; the official description above is the record.