Authentication Bypass in github.com/nhost/nhost (CVE-2026-41574)
Summary
authentication bypass in github.com/nhost/nhost (CVE-2026-41574). Successful exploitation can lead to full system takeover. Exploitable via `GET /users/`. Mitigation: upgrade to `0.0.0-20260417112436-ec8dab3f2cf4` or later.
AI summary snake-internal / snake-material-v2
Response Actions (7 steps)
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'github.com/nhost/nhost' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で `github.com/nhost/nhost` を grep し、稼働しているサービス・バージョンを把握する。
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3Hunt for indicators of compromise detect
grep 'GET /users/' /var/log/nginx/access.log | grep -E '(unusual_payload|sqli_pattern)'アクセスログで `GET /users/` への異常なリクエスト (不正な認証ヘッダ・SQLメタ文字)を過去 30〜90日分捜索。WAF/SIEM があれば該当パスのアラート発火履歴を確認。
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6Apply patch patch
Upgrade github.com/nhost/nhost to 0.0.0-20260417112436-ec8dab3f2cf4ステージング環境で 0.0.0-20260417112436-ec8dab3f2cf4 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスと、Step 3 で見つけた異常検知の続報チェックを含めること。
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7Post-deployment verification verify
Replay attack against GET /users/ on staging to confirm patch closes the vectorパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番では Step 3 と同じログクエリでアラート再発が無いか継続監視。
Affected packages
References
- advisory https://nvd.nist.gov/vuln/detail/CVE-2026-41574
- package https://github.com/nhost/nhost
- web https://github.com/nhost/nhost/commit/ec8dab3f2cf46e1131ddaf893d56c37aa00380b2
- web https://github.com/nhost/nhost/pull/4162
- web https://github.com/nhost/nhost/releases/tag/auth%400.49.1
- web https://github.com/nhost/nhost/security/advisories/GHSA-6g38-8j4p-j3pr
- web https://github.com/advisories/GHSA-6g38-8j4p-j3pr