CVE-2026-47671

Nhost is an open source Firebase alternative with GraphQL. In versions of Nhost CLI prior to 1.46.0, the hidden `nhost configserver` used by `nhost dev` exposes the Mimir GraphQL API with dummy authorization directives and permissive CORS. When a developer is running the local development environment, any process that can reach the developer's localhost service, including a web page loaded from an arbitrary origin, can query the configserver for local Nhost configuration and secrets and can mutate the local `.secrets` file. This impacts developers using `nhost dev`: project admin secrets, JWT signing keys, webhook secrets, Grafana credentials, and custom environment variables can be read, and attacker-controlled secrets can be written to the local development project. Version 1.46.0 of Nhost CLI contains a fix.

• CWE-306

• https://github.com/nhost/nhost/commit/e407511627d2c2c1137a70e9ca1ca31095d23479Patch
• https://github.com/nhost/nhost/pull/4302Issue Tracking, Patch
• https://github.com/nhost/nhost/releases/tag/cli@1.46.0Product, Release Notes
• https://github.com/nhost/nhost/security/advisories/GHSA-64cj-qvx5-m4f3Exploit, Mitigation, Vendor Advisory
• https://github.com/nhost/nhost/security/advisories/GHSA-64cj-qvx5-m4f3Exploit, Mitigation, Vendor Advisory

Published

Jul 21, 2026

Last Modified

Jul 30, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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