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I. Basic Information for CVE-2025-64166
Vulnerability Information

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Vulnerability Title
Mercurius: Incorrect Content-Type parsing can lead to CSRF attack
Source: NVD (National Vulnerability Database)
Vulnerability Description
Mercurius is a GraphQL adapter for Fastify. Prior to version 16.4.0, a cross-site request forgery (CSRF) vulnerability was identified. The issue arises from incorrect parsing of the Content-Type header in requests. Specifically, requests with Content-Type values such as application/x-www-form-urlencoded, multipart/form-data, or text/plain could be misinterpreted as application/json. This misinterpretation bypasses the preflight checks performed by the fetch() API, potentially allowing unauthorized actions to be performed on behalf of an authenticated user. This issue has been patched in version 16.4.0.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨站请求伪造(CSRF)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Mercurius 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mercurius是mercurius-js开源的GraphQL适配器Fastify 。 Mercurius 16.4.0之前版本存在安全漏洞,该漏洞源于对Content-Type标头解析不正确,可能导致跨站请求伪造攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
mercurius-jsmercurius < 16.4.0 -
II. Public POCs for CVE-2025-64166
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III. Intelligence Information for CVE-2025-64166
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