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CVE-2026-25223

HIGH

7.5

Descripcion

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.

Detalles CVE

Puntuacion CVSS v3.17.5

SeveridadHIGH

Vector CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Vector de ataqueNETWORK

ComplejidadLOW

Privilegios requeridosNONE

Interaccion usuarioNONE

Publicado2/3/2026

Ultima modificacion2/10/2026

Fuentenvd

Avistamientos honeypot0

Productos afectados

fastify:fastify

Debilidades (CWE)

CWE-436

Referencias

https://fastify.dev/docs/latest/Reference/Validation-and-Serialization(security-advisories@github.com)

https://github.com/fastify/fastify/blob/759e9787b5669abf953068e42a17bffba7521348/lib/content-type-parser.js#L125(security-advisories@github.com)

https://github.com/fastify/fastify/blob/759e9787b5669abf953068e42a17bffba7521348/lib/validation.js#L272(security-advisories@github.com)

https://github.com/fastify/fastify/commit/32d7b6add39ddf082d92579a58bea7018c5ac821(security-advisories@github.com)

https://github.com/fastify/fastify/security/advisories/GHSA-jx2c-rxcm-jvmq(security-advisories@github.com)

https://hackerone.com/reports/3464114(security-advisories@github.com)

Correlaciones IOC

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