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
- Nhost — versions < 0.12.0
- Nhost Storage
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Mitigation, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC, Issue Tracking)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Product, x_refsource_MISC, Release Notes)
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.