CVE-2026-47671

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 83% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Elevated
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.4Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
5.4
EG Score
5.4(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity54% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
17%
KEV
Not listed

Published

June 4, 2026

Last Modified

July 23, 2026

Advisory Details (4)

Auto-updated Jul 21, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github_pr, github_release, github.
github Patch Available🟡 PoC Available

Nhost CLI local configserver allows cross-origin unauthenticated read/write access to local development configuration and secrets · Advisory · nhost/nhost · GitHub

https://github.com/nhost/nhost/security/advisories/GHSA-64cj-qvx5-m4f3
github_release Patch Available

cli@1.46.0

Patch available: nhost/nhost cli@1.46.0

https://github.com/nhost/nhost/releases/tag/cli@1.46.0
github_pr Patch Available

feat(cli): harden local configserver against cross-origin and exfil access

Patch available: nhost/nhost @nhost/dashboard@2.63.1 (PR #4302 merged 2026-05-18)

https://github.com/nhost/nhost/pull/4302
github_commit Patch Available

commit e407511627d2 (nhost/nhost)

Patch available: nhost/nhost @nhost/dashboard@2.63.1 (contains commit e407511627d2)

https://github.com/nhost/nhost/commit/e407511627d2c2c1137a70e9ca1ca31095d23479

Vendor Advisories for CVE-2026-47671(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
github.com/nhost/nhost—0.0.0-20260518172022-e407511627d2—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 8× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-27 08:57 UTCEG score recompute
  2. 2026-07-26 14:54 UTCEPSS rescore
  3. 2026-07-26 07:36 UTCEG score recompute
  4. 2026-07-25 14:18 UTCEPSS rescore
  5. 2026-07-24 14:18 UTCEPSS rescore
  6. 2026-07-23 14:18 UTCEPSS rescore
  7. 2026-07-23 03:17 UTCEG score recompute
  8. 2026-07-22 14:08 UTCEPSS rescore
  9. 2026-06-14 23:18 UTCEPSS rescore
  10. 2026-06-13 23:00 UTCEPSS rescore
  11. 2026-06-12 23:12 UTCEPSS rescore
  12. 2026-06-04 18:10 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-47671?
CVE-2026-47671 is a medium vulnerability published on June 4, 2026. 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,…
When was CVE-2026-47671 disclosed?
CVE-2026-47671 was first published in the National Vulnerability Database on June 4, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-47671 actively exploited?
CVE-2026-47671 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 83.3% of all scored CVEs.
What is the CVSS score of CVE-2026-47671?
CVE-2026-47671 has a CVSS v3 base score of 5.4 (NVD).
How do I remediate CVE-2026-47671?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-47671, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-47671

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