Auth bypass in Nhost Cli
CVE-2026-34200
Nhost is an open source Firebase alternative with GraphQL. Prior to version 1.41.0, The Nhost CLI MCP server, when explicitly configured to listen on a network port, applies no inbound authentication and does not enforce strict CORS. This…
Vulnerability class: Broken Authentication
EPSS: 0.004 (28.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC, Issue Tracking)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-34200?
- CVE-2026-34200 is a high-severity vulnerability in Nhost Cli, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2026-03-31.
- How severe is CVE-2026-34200?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2026-34200 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.