What is CVE-2026-34200?

CVE-2026-34200 is a vulnerability in Nhost, classified under Missing Authentication for Critical Function. Published 2026-03-31.

Is CVE-2026-34200 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Nhost

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: 0.001 (32.4th percentile) — read the EPSS interpretation.

Affected products

Nhost — versions < 1.41.0

Weakness classification (CWE)

Public proof-of-concept exploits

skoveit/CVE-2026-34200

References

https://github.com/nhost/nhost/security/advisories/GHSA-6c5x-3h35-vvw2 (x_refsource_CONFIRM)
https://github.com/nhost/nhost/pull/4060 (x_refsource_MISC)
https://github.com/nhost/nhost/commit/15eae9285f9dce63e184b9bb24616474ffa5ccc9 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-34200?: CVE-2026-34200 is a vulnerability in Nhost, classified under Missing Authentication for Critical Function. Published 2026-03-31.
Is CVE-2026-34200 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.