CVE-2022-41919
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.39%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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'.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 0.39% probability · 32th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-352
- Affected
- fastify/fastify
- Source
- security-advisories@github.com
References
- https://github.com/fastify/fastify/commit/62dde76f1f7aca76e38625fe8d983761f26e6fc9Patch, Third Party Advisory
- https://github.com/fastify/fastify/security/advisories/GHSA-3fjj-p79j-c9hhThird Party Advisory
- https://www.npmjs.com/package/%40fastify/csrf
- https://github.com/fastify/fastify/commit/62dde76f1f7aca76e38625fe8d983761f26e6fc9Patch, Third Party Advisory
- https://github.com/fastify/fastify/security/advisories/GHSA-3fjj-p79j-c9hhThird Party Advisory
- https://www.npmjs.com/package/%40fastify/csrf
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.