CVE-2026-47671
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.
Does this matter?
Lower severity and a low EPSS score (0.27%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
- EPSS
- 0.27% probability · 19th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-306
- Affected
- nhost/cli
- Source
- security-advisories@github.com
References
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.