find-my-way is Vulnerable to DDoS with HTTP2
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-47219
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 12:29 UTC · Revision 1
Source evidence
find-my-way is Vulnerable to DDoS with HTTP2
core-osv · Original sourcePublished 28 Jul 2026, 22:14 UTC
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.
osv:CVE-2026-47219
Complete source record
{
"id": "5b2f09a49167262d8703c99c5b60e4f813efa53dd8d518c8b7f03095c26f80c7",
"url": "https://osv.dev/vulnerability/CVE-2026-47219",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "find-my-way is Vulnerable to DDoS with HTTP2",
"summary": "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.",
"evidence": "osv:CVE-2026-47219",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-47219",
"aliases": [
"CVE-2026-47219",
"GHSA-c96f-x56v-gq3h"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/delvedor/find-my-way",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "827248e64fe17e44cbd9690e4eb0121e51256385"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
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},
{
"fixed": "9.7.0"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
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},
{
"fixed": "9.7.0"
}
],
"source": "DESCRIPTION"
}
]
}
}
],
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-47219.json"
}
}
],
"modified": "2026-10-28T02:30:28.551759557Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47219.json",
"https://github.com/delvedor/find-my-way/security/advisories/GHSA-c96f-x56v-gq3h",
"https://nvd.nist.gov/vuln/detail/CVE-2026-47219"
],
"provider_metadata": {
"cwe_ids": [
"CWE-20",
"CWE-248"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47219.json"
}
},
"related_cves": [
{
"value": "CVE-2026-47219",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 495403,
"published_at": "2026-07-28T22:14:31.279+00:00"
}