CSRF in Fastify
CVE-2022-41919
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'.
Vulnerability class: CSRF (Cross-Site Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (31.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 31.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
- Fastify — versions >= 4.0.0, < 4.10.2, >= 3.0.0, < 3.29.4
Weakness classification (CWE)
References
- github.com/fastify/fastify/security/advisories/GHSA-3fjj-p79j-c9hh (Third Party Advisory)
- github.com/fastify/fastify/commit/62dde76f1f7aca76e38625fe8d983761f26e6fc9 (Patch, Third Party Advisory)
- www.npmjs.com/package/@fastify/csrf
Frequently asked questions
- What is CVE-2022-41919?
- CVE-2022-41919 is a medium-severity vulnerability in Fastify, classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.2/10. Published 2022-11-22.
- How severe is CVE-2022-41919?
- Medium severity. CVSS v3 base score is 4.2 out of 10.