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fastify 0.23.0 | Vulnerabilities | Sonatype Guide

fastify

0.23.0

fastify 0.23.0

PublishedJun 23, 2017•Policy

compliance

Developer Trust Score

N/A

Recommended Version:x.y.z

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Critical (0)

High (3)

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Low (0)

CVSS Score

0.010.0

EPSS Score

0.01.0

Malware

KEV StatusPublished

7.5CVE-2026-25223

Fastify is a fast and low overhead web framework, for Node.js. Prior to version 5.7.2, a validation bypass vulnerability exists in Fastify where request body validation schemas specified by Content-Type can be completely circumvented. By appending a tab character (\t) followed by arbitrary content to the Content-Type header, attackers can bypass body validation while the server still processes the body as the original content type. This issue has been patched in version 5.7.2.

Published

Feb 3, 2026

8.8CVE-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'.

PublishedNov 22, 2022

7.5CVE-2018-3711

Fastify node module before 0.38.0 is vulnerable to a denial-of-service attack by sending a request with "Content-Type: application/json" and a very large payload.

PublishedFeb 12, 2018