GitHub Advisoryadvisory · npm

GHSA-c96f-x56v-gq3h find-my-way: DDoS with HTTP2

HIGH Published 2026-07-23 Modified 2026-07-23 Official page ↗
Aliases
CVE-2026-47219
Ecosystem
npm
Packages
find-my-way
Severity
High
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-1321
Reviewed
2026-07-23

Affected packages

• npm find-my-way: < 9.7.0 → fixed in 9.7.0

Description

Impact Remotely triggerable DoS in find-my-way when it is used with Node's HTTP/2 server. The short version is that `lookup()` 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`. Patches Upgrade to v9.7.0. Workarounds Do not use find-my-way with HTTP/2 servers, or validate that the http method is valid beforehand.

Related

Alias · CVE (1)

  • CVE-2026-47219 find-my-way is a framework-independent HTTP router that internally uses a Radix Tree and supports route parameters and wildcards. vulnerability

Weakness · CWE (1)

  • CWE-1321 Improperly Controlled Modification of Object Prototype Attributes weakness

References