Vulnerability Details CVE-2026-33221
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 0.8%
CVSS Severity
CVSS v3 Score 5.3
References
Products affected by CVE-2026-33221
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cpe:2.3:a:nhost:storage:0.10.0
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cpe:2.3:a:nhost:storage:0.10.1
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cpe:2.3:a:nhost:storage:0.11.0
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cpe:2.3:a:nhost:storage:0.11.1
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cpe:2.3:a:nhost:storage:0.8.0
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cpe:2.3:a:nhost:storage:0.8.1
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cpe:2.3:a:nhost:storage:0.8.2
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cpe:2.3:a:nhost:storage:0.9.0
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cpe:2.3:a:nhost:storage:0.9.1