CVE-2025-32442

Fastify is a fast and low overhead web framework, for Node.js. In versions 5.0.0 to 5.3.0 as well as version 4.9.0, 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 was patched in v5.3.1, but the initial patch did not cover all problems. This has been fully patched in v5.3.2 and v4.9.1. A workaround involves not specifying individual content types in the schema.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/fastify/fastify/commit/436da4c06dfbbb8c24adee3a64de0c51e4f47418	Patch
https://github.com/fastify/fastify/commit/f3d2bcb3963cd570a582e5d39aab01a9ae692fe4	Patch
https://github.com/fastify/fastify/security/advisories/GHSA-mg2h-6x62-wpwc	Exploit Third Party Advisory
https://hackerone.com/reports/3087928	Permissions Required

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:fastify:fastify::::::node.js::*
	cpe:2.3:a:fastify:fastify:4.29.0:::::node.js::

History

24 Jun 2025, 18:14

Type	Values Removed	Values Added
CPE		cpe:2.3:a:fastify:fastify::::::node.js::* cpe:2.3:a:fastify:fastify:4.29.0:::::node.js::
First Time		Fastify Fastify fastify
References	~~() https://github.com/fastify/fastify/commit/436da4c06dfbbb8c24adee3a64de0c51e4f47418 -~~	() https://github.com/fastify/fastify/commit/436da4c06dfbbb8c24adee3a64de0c51e4f47418 - Patch
References	~~() https://github.com/fastify/fastify/commit/f3d2bcb3963cd570a582e5d39aab01a9ae692fe4 -~~	() https://github.com/fastify/fastify/commit/f3d2bcb3963cd570a582e5d39aab01a9ae692fe4 - Patch
References	~~() https://github.com/fastify/fastify/security/advisories/GHSA-mg2h-6x62-wpwc -~~	() https://github.com/fastify/fastify/security/advisories/GHSA-mg2h-6x62-wpwc - Exploit, Third Party Advisory
References	~~() https://hackerone.com/reports/3087928 -~~	() https://hackerone.com/reports/3087928 - Permissions Required

28 Apr 2025, 18:15

Type	Values Removed	Values Added
Summary		(es) Fastify es un framework web rápido y de bajo consumo para Node.js. En las versiones 5.0.0 a 5.3.0, las aplicaciones que especifican diferentes estrategias de validación para distintos tipos de contenido pueden omitir la validación proporcionando un tipo de contenido ligeramente modificado, como con mayúsculas y minúsculas diferentes o con espacios antes de `;` modificados. Esto se solucionó en la versión 5.3.1, pero la corrección inicial no solucionó todos los problemas. Se ha corregido completamente en la versión 5.3.2. Un workaround consiste en no especificar tipos de contenido individuales en el esquema.
Summary	(en) 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 was patched in v5.3.1, but the initial patch did not cover all problems. This has been fully patched in v5.3.2. A workaround involves not specifying individual content types in the schema.	(en) Fastify is a fast and low overhead web framework, for Node.js. In versions 5.0.0 to 5.3.0 as well as version 4.9.0, 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 was patched in v5.3.1, but the initial patch did not cover all problems. This has been fully patched in v5.3.2 and v4.9.1. A workaround involves not specifying individual content types in the schema.

18 Apr 2025, 21:15

Type	Values Removed	Values Added
Summary	(en) 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.	(en) 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 was patched in v5.3.1, but the initial patch did not cover all problems. This has been fully patched in v5.3.2. A workaround involves not specifying individual content types in the schema.
References		() https://github.com/fastify/fastify/commit/f3d2bcb3963cd570a582e5d39aab01a9ae692fe4 -

18 Apr 2025, 16:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-04-18 16:15

Updated : 2025-06-24 18:14

NVD link : CVE-2025-32442

Mitre link : CVE-2025-32442

CVE.ORG link : CVE-2025-32442

JSON object : View

Products Affected

fastify

fastify

CWE

CWE-1287

Improper Validation of Specified Type of Input

7.5 /10