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 4.29.0, 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 v4.29.1. A workaround involves not specifying individual content types in the schema.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

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

No history.

Information

Published : 2025-04-18 16:15

Updated : 2025-08-22 21:15

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

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