CVE-2026-33221

EUVD-2026-13877
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.3 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 6%
Affected Products (NVD)
VendorProductVersion
nhoststorage
𝑥
< 0.12.0
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/nhost/nhost/commit/c4bd53f042d7f568e567e18e2665af81660fce85
https://github.com/nhost/nhost/pull/4018
https://github.com/nhost/nhost/releases/tag/storage%400.12.0
https://github.com/nhost/nhost/security/advisories/GHSA-g9f6-9775-hffm