CVE-2025-32442 – Fastify Content-Type Validation Bypass Vulnerability

The following table lists the changes that have been made to the
CVE-2025-32442 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by [email protected]

    Apr. 18, 2025

    Action Type Old Value New Value
    Added Description Fastify is a fast and low overhead web framework, for Node.js. In versions 5.0.0 to 5.3.0, applications that specify different validation strategies for different content types have a possibility to bypass validation by providing a _slightly altered_ content type such as with different casing or altered whitespacing before `;`. This issue has been patched in version 5.3.1. A workaround involves not specifying individual content types in the schema.
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
    Added CWE CWE-1287
    Added Reference https://github.com/fastify/fastify/commit/436da4c06dfbbb8c24adee3a64de0c51e4f47418
    Added Reference https://github.com/fastify/fastify/security/advisories/GHSA-mg2h-6×62-wpwc
    Added Reference https://hackerone.com/reports/3087928
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