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.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
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.
Which versions are affected by CVE-2026-47219?
2 open source packages ship an affected version, including find-my-way.
| Package | 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.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-47219 being exploited?
There is no known exploitation of CVE-2026-47219 in the wild and no public exploit code.
Sources
Also known as CLSA-2026-1785291246, CLSA-2026-1792488967, CLSA-2026-1792489084, GHSA-c96f-x56v-gq3h, MINI-9p3p-m3qv-j7v3.