Fastify vulnerable to Cross-Site Request Forgery (CSRF) attack via incorrect content type
Fastify is a web framework with minimal overhead and plugin architecture. The attacker can use the incorrect `Content-Type` to bypass the `Pre-Flight` checking of `fetch`. `fetch()` requests with Content-Type’s essence as "application/x-www-form-urlencoded", "multipart/form-data", or "text/plain", could potentially be used to invoke routes that only accepts `application/json` content type, thus bypassing any CORS protection, and therefore they could lead to a Cross-Site Request Forgery attack. This issue has been patched in version 4.10.2 and 3.29.4. As a workaround, implement Cross-Site Request Forgery protection using `@fastify/csrf'.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2022-41919
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 17:48 UTC · Revision 1
Source evidence
Fastify vulnerable to Cross-Site Request Forgery (CSRF) attack via incorrect content type
core-osv · Original sourcePublished 22 Nov 2022, 00:00 UTC
Fastify is a web framework with minimal overhead and plugin architecture. The attacker can use the incorrect `Content-Type` to bypass the `Pre-Flight` checking of `fetch`. `fetch()` requests with Content-Type’s essence as "application/x-www-form-urlencoded", "multipart/form-data", or "text/plain", could potentially be used to invoke routes that only accepts `application/json` content type, thus bypassing any CORS protection, and therefore they could lead to a Cross-Site Request Forgery attack. This issue has been patched in version 4.10.2 and 3.29.4. As a workaround, implement Cross-Site Request Forgery protection using `@fastify/csrf'.
osv:CVE-2022-41919
Complete source record
{
"id": "19baf19db1f958a97456b901d5717d146cda4dace931da417367b8d6778504c3",
"url": "https://osv.dev/vulnerability/CVE-2022-41919",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Fastify vulnerable to Cross-Site Request Forgery (CSRF) attack via incorrect content type",
"summary": "Fastify is a web framework with minimal overhead and plugin architecture. The attacker can use the incorrect `Content-Type` to bypass the `Pre-Flight` checking of `fetch`. `fetch()` requests with Content-Type’s essence as \"application/x-www-form-urlencoded\", \"multipart/form-data\", or \"text/plain\", could potentially be used to invoke routes that only accepts `application/json` content type, thus bypassing any CORS protection, and therefore they could lead to a Cross-Site Request Forgery attack. This issue has been patched in version 4.10.2 and 3.29.4. As a workaround, implement Cross-Site Request Forgery protection using `@fastify/csrf'.",
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"modified": "2026-10-28T02:30:31.260930405Z",
"provider": "osv",
"references": [
"https://www.npmjs.com/package/%40fastify/csrf",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/41xxx/CVE-2022-41919.json",
"https://github.com/fastify/fastify/security/advisories/GHSA-3fjj-p79j-c9hh",
"https://nvd.nist.gov/vuln/detail/CVE-2022-41919",
"https://github.com/fastify/fastify/commit/62dde76f1f7aca76e38625fe8d983761f26e6fc9"
],
"provider_metadata": {
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"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/41xxx/CVE-2022-41919.json"
}
},
"related_cves": [
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"evidence": "/id"
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},
"source_id": "core-osv",
"document_id": 498001,
"published_at": "2022-11-22T00:00:00+00:00"
}