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I. Basic Information for CVE-2026-33221
Vulnerability Information

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Vulnerability Title
Nhost Storage Affected by MIME Type Spoofing via Trusted Client Content-Type Header in Storage Upload
Source: NVD (National Vulnerability Database)
Vulnerability Description
Nhost is an open source Firebase alternative with GraphQL. Prior to version 0.12.0, the storage service's file upload handler trusts the client-provided Content-Type header without performing server-side MIME type detection. This allows an attacker to upload files with an arbitrary MIME type, bypassing any MIME-type-based restrictions configured on storage buckets. This issue has been patched in version 0.12.0.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
对数据真实性的验证不充分
Source: NVD (National Vulnerability Database)
Vulnerability Title
Nhost 数据伪造问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nhost是Nhost开源的一个后端即服务平台。 Nhost 0.12.0之前版本存在数据伪造问题漏洞,该漏洞源于存储服务的文件上传处理程序信任客户端提供的Content-Type标头而未进行服务器端MIME类型检测,可能导致攻击者上传任意MIME类型的文件,绕过存储桶的MIME类型限制。
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
nhostnhost < 0.12.0 -
II. Public POCs for CVE-2026-33221
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III. Intelligence Information for CVE-2026-33221
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IV. Related Vulnerabilities
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