Vulnerability in Nhost

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…

EPSS: 0.000 (0.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-33221?
CVE-2026-33221 is a medium-severity vulnerability in Nhost, classified under CWE-343. CVSS score: 5.3/10. Published 2026-03-20.
How severe is CVE-2026-33221?
Medium severity. CVSS v3 base score is 5.3 out of 10.