Vulnerabilities in pkg:npm/find-my-way

PACKAGE
Advisory Identifier: GHSA-c96f-x56v-gq3h
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Advisory Summary

CVE-2026-47219 is a HIGH (CVSS 7.5) denial of service vulnerability (CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')) affecting find-my-way libraries in the npm ecosystem. The issue involves ddos with http2. Remediation is available by upgrading affected packages to version 9.7.0.

3 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:npm/find-my-way

3 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:npm/find-my-way. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-c96f-x56v-gq3h CVE-2026-47219 HIGH find-my-way: DDoS with HTTP2
GHSA-rrr8-f88r-h8q6 CVE-2024-45813 HIGH find-my-way has a ReDoS vulnerability in multiparametric routes
GHSA-jgrh-5m3h-9c5f CVE-2020-7764 MODERATE Web Cache Poisoning in find-my-way

CVE-2026-47219 at a Glance

CVE Identifier CVE-2026-47219
GHSA Identifier GHSA-c96f-x56v-gq3h
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Affected Product find-my-way
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2026-47219

To remediate this vulnerability, upgrade all affected find-my-way dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

find-my-way fixed: 9.7.0 
npm install find-my-way@9.7.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls find-my-way

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2026-47219, inspect your project dependencies using npm:

npm ls find-my-way

Analyze the terminal output to locate any version of find-my-way in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 9.7.0), your application is affected.

Note: The npm ls find-my-way command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution'), where the product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype. In find-my-way, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### 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.

CVE-2026-47219 Affected find-my-way Versions

1 component(s)
Fixed Versions:
9.7.0
Product / Package Ecosystem Affected Versions Fixed Version
find-my-way
npm/find-my-way
npm
< 9.7.0
9.7.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/delvedor/find-my-way/security/advisories/GHSA-c96f-x56v-gq3h
find-my-way Source Repository REPOSITORY
https://github.com/delvedor/find-my-way/pull/434
Security Fix Commit FIX COMMIT
https://github.com/delvedor/find-my-way/commit/cfe3fd6168b5ac1594c0820fb83fce251a533fc1
find-my-way Source Repository REPOSITORY
https://github.com/delvedor/find-my-way
find-my-way Release RELEASE
https://github.com/delvedor/find-my-way/releases/tag/v9.7.0

Frequently Asked Questions

What is CVE-2026-47219?
CVE-2026-47219 is a security vulnerability in find-my-way involving DDoS with HTTP2 under CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution').
Which find-my-way versions are affected?
Affected versions include releases prior to 9.7.0 across affected packages: find-my-way.
What version fixes CVE-2026-47219?
Upgrading to 9.7.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is find-my-way affected?
Yes, find-my-way is affected in releases prior to 9.7.0. Upgrade your dependency to 9.7.0 or later.
What is the CVSS score of CVE-2026-47219?
CVE-2026-47219 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2026-47219?
CVE-2026-47219 is classified under CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') (The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.).
How can I check npm dependencies for CVE-2026-47219?
Run the dependency tree command: 'npm ls find-my-way'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-c96f-x56v-gq3h",
  "modified" : "2026-07-23T19:33:15Z",
  "published" : "2026-07-23T19:33:15Z",
  "aliases" : [ "CVE-2026-47219" ],
  "summary" : "find-my-way: DDoS with HTTP2",
  "details" : "### Impact\nRemotely triggerable DoS in find-my-way when it is used with Node's HTTP/2 server.\n\nThe 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`.\n\n### Patches\n\nUpgrade to v9.7.0.\n\n### Workarounds\n\nDo not use find-my-way with HTTP/2 servers, or validate that the http method is valid beforehand.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
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      "name" : "find-my-way"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "9.7.0"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 9.6.0"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/delvedor/find-my-way/security/advisories/GHSA-c96f-x56v-gq3h"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/delvedor/find-my-way/pull/434"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/delvedor/find-my-way/commit/cfe3fd6168b5ac1594c0820fb83fce251a533fc1"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/delvedor/find-my-way"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/delvedor/find-my-way/releases/tag/v9.7.0"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1321" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-07-23T19:33:15Z",
    "nvd_published_at" : null
  }
}