EUVD-2026-22818

Fastify has a Body Schema Validation Bypass via Leading Space in Content-Type Header...

CVE-2026-33806

Impact: Fastify applications using schema.body.content for per-content-type body validation can have validation bypassed entirely by prepending a space to the Content-Type header. The body is still parsed correctly but schema validation is skipped. This is a regression introduced in fastify = 5.3...

CVE-2026-33806

Summary: CVE-2026-33806 affects Fastify where, in applications using schema.body.content, a leading space in the Content-Type header can bypass per-content-type body validation while the body is parsed normally. This is a regression introduced in Fastify >= 5.3.2 as a follow-up to CVE-2025-324...

CVE-2026-33806 fastify vulnerable to Body Schema Validation Bypass via Leading Space in Content-Type Header

Impact: Fastify applications using schema.body.content for per-content-type body validation can have validation bypassed entirely by prepending a space to the Content-Type header. The body is still parsed correctly but schema validation is skipped. This is a regression introduced in fastify = 5.3...

CVE-2026-25223 Fastify's Content-Type header tab character allows body validation bypass

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 ...

CVE-2026-25223

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 ...

Fastify 安全漏洞

Fastify is an open-source web framework developed by Fastify. Versions of Fastify prior to 5.7.2 contained security vulnerabilities. These vulnerabilities stemmed from a request body validation pattern that could be completely bypassed, allowing attackers to circumvent body validation...

GHSA-JX2C-RXCM-JVMQ Fastify's Content-Type header tab character allows body validation bypass

Impact 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 serve...

Interpretation Conflict

Overview fastify is an overhead web framework, for Node.js. Affected versions of this package are vulnerable to Interpretation Conflict via the Content-Type header processing. An attacker can bypass body validation by appending a tab character \t and arbitrary content to the Content-Type header,...

Fastify's Content-Type header tab character allows body validation bypass

Impact 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 serve...