cvedb.io
CVE-2026-25223
HIGH · CVSS 7.5
EPSS exploitation probability: 0%
Published 2026-02-03T22:16:31.130 · Last modified 2026-06-30T03:17:41.350

Summary

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.

Affected products

fastify — fastify

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.