CVE-2026-47671 nhost CVE debrief

Who should care

Developers using `nhost dev` for local development environments should be aware of this vulnerability and ensure they are using version 1.46.0 or later of Nhost CLI to prevent exposure of sensitive information. Additionally, security teams and vulnerability management teams should review the vulnerability and implement additional security measures to prevent exploitation.

Technical summary

The vulnerability in Nhost CLI exposes the Mimir GraphQL API with insufficient authorization and CORS configuration. This allows unauthorized access to local Nhost configuration and secrets, including project admin secrets, JWT signing keys, webhook secrets, Grafana credentials, and custom environment variables. An attacker can read sensitive information and write attacker-controlled secrets to the local development project. The vulnerability is related to the `nhost configserver` used by `nhost dev` and can be exploited by any process that can reach the developer's localhost service.

Defensive priority

Medium priority due to the potential for sensitive information exposure and modification.

Recommended defensive actions

• Update Nhost CLI to version 1.46.0 or later
• Review and restrict access to the `nhost dev` service
• Monitor for suspicious activity related to the `nhost configserver`
• Implement additional security measures for local development environments
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record was published on 2026-07-21T20:17:01.473Z and last modified on 2026-07-22T16:17:25.663Z. The NVD entry is currently under review. The vulnerability was reported by a security researcher and is related to the exposure of sensitive information in Nhost CLI versions prior to 1.46.0. The CVE record was assigned by CVE.org and is also listed in the NVD. The vulnerability affects developers using `nhost dev` for local development environments.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.