GHSA-247C-9743-5963 Fastify has a Body Schema Validation Bypass via Leading Space in Content-Type Header

Summary A validation bypass vulnerability exists in Fastify v5.x where request body validation schemas specified via schema.body.content can be completely circumvented by prepending a single space character \x20 to the Content-Type header. The body is still parsed correctly as JSON or any other...

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

Summary A validation bypass vulnerability exists in Fastify v5.x where request body validation schemas specified via schema.body.content can be completely circumvented by prepending a single space character \x20 to the Content-Type header. The body is still parsed correctly as JSON or any other...

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-2022-25757

In Apache APISIX before 2.13.0, when decoding JSON with duplicate keys, lua-cjson will choose the last occurred value as the result. By passing a JSON with a duplicate key, the attacker can bypass the bodyschema validation in the request-validation plugin. For example,...

Apache Apisix 输入验证错误漏洞

Apache Apisix is a cloud-native microservices API gateway service from the Apache Foundation. The software is based on OpenResty and etcd, with dynamic routing and plugin hot-loading for API management in microservices systems. An attacker could use this vulnerability to bypass the bodyschema...

PT-2022-17492 · Apache · Apache Apisix

Name of the Vulnerable Software and Affected Versions: Apache APISIX versions prior to 2.13.0 Description: The issue allows an attacker to bypass body schema validation in the request-validation plugin by passing a JSON with a duplicate key. This can be achieved by sending a JSON payload such as...