Is CVE-2026-33221 actively exploited?

No active exploitation of CVE-2026-33221 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-33221 be exploited remotely?

Yes. CVE-2026-33221 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-33221?

CVE-2026-33221 has a CVSS score of 2.1 (LOW).

HOME VULNERABILITIESCVE-2026-33221

LOW

CVE-2026-33221

CWE-343Published: March 20, 2026· Updated: Mar 23, 2026

2.1

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:0.5th

Official 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.

NVD Source

Technical Analysis

CVE-2026-33221 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (A) is needed, which slightly reduces the risk of mass automated attacks.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges Req.None

User InteractionA

ScopeX

Impact

Confidentiality

Integrity

Availability

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X