CVE-2026-33221

LOW

Nhost Storage Affected by MIME Type Spoofing via Trusted Client Content-Type Header in Storage Upload

Title source: cna
STIX 2.1

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.

References (4)

Scores

CVSS v4 2.1
EPSS 0.0001
EPSS Percentile 1.1%
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-343 CWE-345
Status published
Products (2)
nhost/nhost 0 - 0.0.0-20260318074820-c4bd53f042d7Go
nhost/nhost < 0.12.0
Published Mar 20, 2026
Tracked Since Mar 21, 2026