# CVE-2026-47671: Nhost CLI missing authentication in local configserver

Source: https://junglewise.ai/threats/cve-2026-47671-nhost-cli-missing-authentication-in-local-configserver  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-21. Updated: 2026-07-21  
License: CC BY 4.0 with a link back

CVE-2026-47671 · Severity: medium · CVSS 5.4 · Published 2026-07-21

Nhost is an open-source development platform used as an alternative to Firebase. In affected versions of its command-line interface (CLI), a background service used during local development fails to properly restrict access. This allows malicious websites visited by a developer to steal sensitive project secrets—such as admin keys and JWT signing keys—or modify local configuration files, potentially leading to a full compromise of the development environment.

Technologies: [github.com/nhost/nhost (Go)](https://junglewise.ai/threats/technologies/github-com-nhost-nhost), [Nhost\](https://junglewise.ai/threats/technologies/nhost). Vendors: [Go](https://junglewise.ai/threats/vendors/go), [Nhost](https://junglewise.ai/threats/vendors/nhost).

## Quick answers

**Is CVE-2026-47671 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-47671 being exploited in the wild.

**How severe is CVE-2026-47671?** Medium severity, with a CVSS score of 5.4, published 21 July 2026.

**Which products and versions are affected?** github.com/nhost/nhost (Go) < 0.0.0-20260518172022-e407511627d2, SEMVER:introduced=0,fixed=0.0.0-20260518172022-e407511627d2; Nhost\ < 0.0.0-20260518172022-e407511627d2.

**Is there a fix for CVE-2026-47671?** Yes. github.com/nhost/nhost (Go): upgrade to 0.0.0-20260518172022-e407511627d2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-47671 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-47671?** Check whether you run github.com/nhost/nhost (Go) or Nhost\ at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- github.com/nhost/nhost (Go): upgrade to 0.0.0-20260518172022-e407511627d2 or later

  ```sh
  go get github.com/nhost/nhost@v0.0.0-20260518172022-e407511627d2
  ```


## Technical details

A vulnerability in the hidden `nhost configserver` component, triggered by the `nhost dev` command, stems from missing authentication (CWE-306) and overly permissive CORS policies. The Mimir GraphQL API is exposed with dummy authorization directives, allowing any process capable of reaching the developer's localhost—including a browser executing code from an arbitrary origin—to query or mutate local configuration. Attackers can exploit this via Cross-Origin Resource Sharing (CORS) to read sensitive data like project admin secrets, JWT signing keys, and webhook secrets, or to overwrite the local `.secrets` file. The fix in version 1.46.0 introduces regex-validated origin checks, redacts secrets in memory, and implements a per-project random UUIDv4 for authentication.

## Affected products

- Nhost CLI < 1.46.0

## Identifiers

- CVE-2026-47671
- GHSA-64cj-qvx5-m4f3
- GO-2026-5166

## Timeline

- 2026-05-18: patched: Fix committed to main branch
- 2026-05-19: advisory: Release cli@1.46.0 published
- 2026-07-21: disclosed: CVE-2026-47671 published

## References

- [https://github.com/nhost/nhost/commit/e407511627d2c2c1137a70e9ca1ca31095d23479](https://github.com/nhost/nhost/commit/e407511627d2c2c1137a70e9ca1ca31095d23479)
- [https://github.com/nhost/nhost/pull/4302](https://github.com/nhost/nhost/pull/4302)
- [https://github.com/nhost/nhost/releases/tag/cli@1.46.0](https://github.com/nhost/nhost/releases/tag/cli@1.46.0)
- [https://github.com/nhost/nhost/security/advisories/GHSA-64cj-qvx5-m4f3](https://github.com/nhost/nhost/security/advisories/GHSA-64cj-qvx5-m4f3)

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