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CVE-2026-25223

HIGH

7.5

Description

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.

Details CVE

Score CVSS v3.17.5

SeveriteHIGH

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

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie2/3/2026

Derniere modification2/10/2026

Sourcenvd

Observations honeypot0

Produits affectes

fastify:fastify

Faiblesses (CWE)

CWE-436

References

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)

Correlations IOC

Aucune correlation enregistree

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