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VULNERABILITIES

CVE-2026-33221 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/nhost/nhost/commit/c4bd53f042d7f568e567e18e2665af81660fce85 [email protected]Patch
https://github.com/nhost/nhost/pull/4018 [email protected]Issue TrackingPatch
https://github.com/nhost/nhost/releases/tag/storage%400.12.0 [email protected]ProductRelease Notes
https://github.com/nhost/nhost/security/advisories/GHSA-g9f6-9775-hffm [email protected]MitigationVendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-343Predictable Value Range from Previous Values[email protected]
CWE-345Insufficient Verification of Data Authenticity[email protected]

Affected Products

ProductVersions
nhost storage
< 0.12.0

CPE

  • cpe:2.3:a:nhost:storage:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-33221
NVD Published Date:
Mar 20, 2026
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2026-33221 Details - Not Deferred