Vulnerability · Published Jul 28, 2026 · Assigned by GitHub_M

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

High 7.5

In plain English

A high-severity improper input validation in find-my-way from delvedor. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.5%top 60.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	find-my-way	9.7.0	GHSA-c96f-x56v-gq3h

Affected products (as reported)

Vendor	Product	Versions
delvedor	find-my-way	< 9.7.0

Weakness: CWE-20, CWE-248 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

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