CVE-2026-33221 — Nhost Storage Affected by MIME Type Spoofing via Trusted Client Content-Type Header in Storage Upload
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 with…
Published: 2026-03-20 · CVSS: 2.1 · CVSS 4.0
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: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7