CVE-2022-41919
low-risk
Published 2022-11-22
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'.
Do I need to act?
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0.17% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.2/10
Medium
NETWORK
/ HIGH complexity
Affected Products (1)
Fastify
Affected Vendors
References (6)
Third Party Advisory
https://github.com/fastify/fastify/security/advisories/GHSA-3fjj-p79j-c9hh
Third Party Advisory
https://github.com/fastify/fastify/security/advisories/GHSA-3fjj-p79j-c9hh
20
/ 100
low-risk
Severity
14/34 · Moderate
Exploitability
1/34 · Minimal
Exposure
5/34 · Minimal