{ "type": "error", "status": 403, "code": "cors_origin_not_whitelisted", "context_info": { "origin": "https://company.com" }, "help_url": "/guides/api-calls/permissions-and-errors/common-errors/", "message": "Access denied - Did you forget to safelist your origin in the CORS config of your app?", "request_id": "4dsdfsa832213"}
Cross-Origin Request Blocked: The Same Origin Policy disallows readingthe remote resource at https://api.box.com/2.0/users/me. (Reason: CORSrequest did not succeed).
サーバーが正しく設定されているかどうかを確認する - クロスドメインリクエストを処理するか、No ‘access-control-allow-origin’ header is present on the requested resource (リクエストしたリソースには「access-control-allow-origin」ヘッダーが存在しません) という警告が表示された場合は非クロスドメインリクエストを使用するようサーバーを構成します。
最終更新日 2026年9月15日
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`}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:`\"cors_origin_not_whitelisted\"`}),_jsx(_components.span,{style:{color:`#1F2328`,\"--shiki-dark\":`#D4D4D4`},children:`,`})]}),`\n`,_jsxs(_components.span,{className:`line`,children:[_jsx(_components.span,{style:{color:`#116329`,\"--shiki-dark\":`#9CDCFE`},children:` \"context_info\"`}),_jsx(_components.span,{style:{color:`#1F2328`,\"--shiki-dark\":`#D4D4D4`},children:`: {`})]}),`\n`,_jsxs(_components.span,{className:`line`,children:[_jsx(_components.span,{style:{color:`#116329`,\"--shiki-dark\":`#9CDCFE`},children:` \"origin\"`}),_jsx(_components.span,{style:{color:`#1F2328`,\"--shiki-dark\":`#D4D4D4`},children:`: `}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:`\"https://company.com\"`})]}),`\n`,_jsx(_components.span,{className:`line`,children:_jsx(_components.span,{style:{color:`#1F2328`,\"--shiki-dark\":`#D4D4D4`},children:` },`})}),`\n`,_jsxs(_components.span,{className:`line`,children:[_jsx(_components.span,{style:{color:`#116329`,\"--shiki-dark\":`#9CDCFE`},children:` \"help_url\"`}),_jsx(_components.span,{style:{color:`#1F2328`,\"--shiki-dark\":`#D4D4D4`},children:`: `}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:`\"/guides/api-calls/permissions-and-errors/common-errors/\"`}),_jsx(_components.span,{style:{color:`#1F2328`,\"--shiki-dark\":`#D4D4D4`},children:`,`})]}),`\n`,_jsxs(_components.span,{className:`line`,children:[_jsx(_components.span,{style:{color:`#116329`,\"--shiki-dark\":`#9CDCFE`},children:` \"message\"`}),_jsx(_components.span,{style:{color:`#1F2328`,\"--shiki-dark\":`#D4D4D4`},children:`: `}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:`\"Access denied - Did you forget to safelist your origin in the CORS config of your app?\"`}),_jsx(_components.span,{style:{color:`#1F2328`,\"--shiki-dark\":`#D4D4D4`},children:`,`})]}),`\n`,_jsxs(_components.span,{className:`line`,children:[_jsx(_components.span,{style:{color:`#116329`,\"--shiki-dark\":`#9CDCFE`},children:` \"request_id\"`}),_jsx(_components.span,{style:{color:`#1F2328`,\"--shiki-dark\":`#D4D4D4`},children:`: `}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:`\"4dsdfsa832213\"`})]}),`\n`,_jsx(_components.span,{className:`line`,children:_jsx(_components.span,{style:{color:`#1F2328`,\"--shiki-dark\":`#D4D4D4`},children:`}`})}),`\n`]})})}),`\n`,_jsx(_components.p,{children:`オリジンが設定されていない場合は、このアプリケーションのBox APIに対するすべてのリクエストでエラーが返されます。`}),`\n`,_jsxs(Heading,{level:`3`,id:`access-control-allow-originレスポンスヘッダー`,children:[_jsx(_components.code,{children:`Access-Control-Allow-Origin`}),`レスポンスヘッダー`]}),`\n`,_jsxs(_components.p,{children:[`Box APIは、`,_jsx(_components.code,{children:`Origin`}),`ヘッダーを検証した後、リクエストされたデータのほか、値`,_jsx(_components.code,{children:`*`}),`が設定された`,_jsx(_components.code,{children:`Access-Control-Allow-Origin`}),`レスポンスヘッダーを返します。`]}),`\n`,_jsx(CodeBlock,{filename:``,numberOfLines:`10`,language:`yaml`,children:_jsx(_components.pre,{className:`shiki shiki-themes github-light-default dark-plus`,style:{backgroundColor:`#ffffff`,\"--shiki-dark-bg\":`#0B0C0E`,color:`#1f2328`,\"--shiki-dark\":`#D4D4D4`},language:`yaml`,children:_jsxs(_components.code,{language:`yaml`,numberOfLines:`10`,children:[_jsx(_components.span,{className:`line`,children:_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:`HTTP/1.1 200 OK`})}),`\n`,_jsxs(_components.span,{className:`line`,children:[_jsx(_components.span,{style:{color:`#116329`,\"--shiki-dark\":`#569CD6`},children:`Date`}),_jsx(_components.span,{style:{color:`#1F2328`,\"--shiki-dark\":`#D4D4D4`},children:`: `}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:`Wed, 23 Sep 2020 14:07:29 GMT`})]}),`\n`,_jsxs(_components.span,{className:`line`,children:[_jsx(_components.span,{style:{color:`#116329`,\"--shiki-dark\":`#569CD6`},children:`Content-Type`}),_jsx(_components.span,{style:{color:`#1F2328`,\"--shiki-dark\":`#D4D4D4`},children:`: `}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:`application/json`})]}),`\n`,_jsxs(_components.span,{className:`line`,children:[_jsx(_components.span,{style:{color:`#116329`,\"--shiki-dark\":`#569CD6`},children:`Transfer-Encoding`}),_jsx(_components.span,{style:{color:`#1F2328`,\"--shiki-dark\":`#D4D4D4`},children:`: `}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:`chunked`})]}),`\n`,_jsxs(_components.span,{className:`line`,children:[_jsx(_components.span,{style:{color:`#116329`,\"--shiki-dark\":`#569CD6`},children:`Connection`}),_jsx(_components.span,{style:{color:`#1F2328`,\"--shiki-dark\":`#D4D4D4`},children:`: `}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:`keep-alive`})]}),`\n`,_jsxs(_components.span,{className:`line`,children:[_jsx(_components.span,{style:{color:`#116329`,\"--shiki-dark\":`#569CD6`},children:`Strict-Transport-Security`}),_jsx(_components.span,{style:{color:`#1F2328`,\"--shiki-dark\":`#D4D4D4`},children:`: `}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:`max-age=31536000`})]}),`\n`,_jsxs(_components.span,{className:`line`,children:[_jsx(_components.span,{style:{color:`#116329`,\"--shiki-dark\":`#569CD6`},children:`Cache-Control`}),_jsx(_components.span,{style:{color:`#1F2328`,\"--shiki-dark\":`#D4D4D4`},children:`: `}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:`no-cache, no-store`})]}),`\n`,_jsxs(_components.span,{className:`line`,children:[_jsx(_components.span,{style:{color:`#116329`,\"--shiki-dark\":`#569CD6`},children:`Access-Control-Allow-Origin`}),_jsx(_components.span,{style:{color:`#1F2328`,\"--shiki-dark\":`#D4D4D4`},children:`: *`})]}),`\n`,_jsxs(_components.span,{className:`line`,children:[_jsx(_components.span,{style:{color:`#116329`,\"--shiki-dark\":`#569CD6`},children:`Vary`}),_jsx(_components.span,{style:{color:`#1F2328`,\"--shiki-dark\":`#D4D4D4`},children:`: `}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:`Origin`})]}),`\n`,_jsxs(_components.span,{className:`line`,children:[_jsx(_components.span,{style:{color:`#116329`,\"--shiki-dark\":`#569CD6`},children:`BOX-REQUEST-ID`}),_jsx(_components.span,{style:{color:`#1F2328`,\"--shiki-dark\":`#D4D4D4`},children:`: `}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:`032cfb446dae4fd0b4c2bff80a1a97ba7`})]}),`\n`]})})}),`\n`,_jsx(_components.p,{children:`このヘッダーを返すことにより、Box APIはウェブブラウザに対して、データをリクエストしたサイトでレスポンスを使用できることを通知します。`}),`\n`,_jsx(Heading,{level:`2`,id:`ドメインのcorsの有効化`,children:`ドメインのCORSの有効化`}),`\n`,_jsxs(_components.p,{children:[`アプリケーションが動作するドメインでCORSを有効にするには、開発者コンソールに移動して、アプリケーションを選択し、[`,_jsx(_components.strong,{children:`構成`}),`] パネルの一番の下までスクロールして [`,_jsx(_components.strong,{children:`CORSドメイン`}),`] の設定を見つけます。`]}),`\n`,_jsxs(_components.p,{children:[`アプリケーションでのAPIリクエストの発信元になると予想されるすべてのオリジンをコンマ区切りリストとして追加します。ドメインにはスキーマ (`,_jsx(_components.code,{children:`http`}),`または`,_jsx(_components.code,{children:`https`}),`) が必要で、`,_jsx(_components.code,{children:`*.example.com`}),`のようにサブドメインのワイルドカードを含めることができます。`]}),`\n`,_jsxs(_components.p,{children:[`サイトが非標準のポート上で動作する場合は、サイトにそのポートも含める必要があります。これは、特に、`,_jsx(_components.code,{children:`localhost`}),`または`,_jsx(_components.code,{children:`127.0.0.1`}),`で動作しているサイトに当てはまります。`]}),`\n`,_jsx(_components.p,{children:`オリジンのリストの例は、次のようになります。`}),`\n`,_jsx(CodeBlock,{filename:``,numberOfLines:`1`,language:`shellscript`,children:_jsx(_components.pre,{className:`shiki shiki-themes github-light-default dark-plus`,style:{backgroundColor:`#ffffff`,\"--shiki-dark-bg\":`#0B0C0E`,color:`#1f2328`,\"--shiki-dark\":`#D4D4D4`},language:`shellscript`,children:_jsxs(_components.code,{language:`shellscript`,numberOfLines:`1`,children:[_jsx(_components.span,{className:`line`,children:_jsx(_components.span,{style:{color:`#953800`,\"--shiki-dark\":`#DCDCAA`},children:`https://company.com,https://*.internal.company.com,http://localhost:3000`})}),`\n`]})})}),`\n`,_jsx(Heading,{level:`2`,id:`corsのデバッグ`,children:`CORSのデバッグ`}),`\n`,_jsx(_components.p,{children:`Box APIに対してAPIコールを実行した場合に発生する可能性のあるCORSエラーはいくつかあります。`}),`\n`,_jsxs(Heading,{level:`3`,id:`http-403-許可済みオリジンが定義されていない`,children:[_jsx(_components.code,{children:`HTTP 403`}),` - 許可済みオリジンが定義されていない`]}),`\n`,_jsx(_components.p,{children:`オリジンのリストを指定した後でも、このエラーが発生する場合があります。多くの場合、指定したオリジンに誤字があることが原因です。`}),`\n`,_jsxs(_components.ol,{children:[`\n`,_jsxs(_components.li,{children:[_jsx(_components.strong,{children:`オリジンを確認する`}),` - 開発者コンソールに戻り、オリジンがAPIコールの実行元のサイトをマップしていることを確認します。オリジンにはスキーム (`,_jsx(_components.code,{children:`http(s)`}),`) が含まれても、パスまたは末尾の`,_jsx(_components.code,{children:`/`}),`は含まれないことに注意してください。ブラウザのデバッグコンソールを使用してページを調査し、`,_jsx(_components.code,{children:`Origin`}),`リクエストヘッダーの値を確認することをお勧めします。この値は、開発者コンソールで指定された値のいずれかと一致する必要があります。`]}),`\n`,_jsxs(_components.li,{children:[_jsx(_components.strong,{children:`資格情報を確認する`}),` - このエラーのもう1つの理由として、オリジンを設定したアプリケーションとは別のアプリケーションとして認証している可能性が考えられます。資格情報が、使用するアプリケーションのものと一致することを確認してください。サーバー側スクリプトから呼び出しを実行して、APIコールが動作するかどうかを検証することをお勧めします。`]}),`\n`]}),`\n`,_jsx(Heading,{level:`3`,id:`cross-origin-request-blocked`,children:_jsx(_components.code,{children:`Cross-Origin Request Blocked`})}),`\n`,_jsx(_components.p,{children:`場合によっては、CORSに言及するJavaScriptエラーが発生します。`}),`\n`,_jsx(CodeBlock,{filename:``,numberOfLines:`3`,language:`shellscript`,children:_jsx(_components.pre,{className:`shiki shiki-themes github-light-default dark-plus`,style:{backgroundColor:`#ffffff`,\"--shiki-dark-bg\":`#0B0C0E`,color:`#1f2328`,\"--shiki-dark\":`#D4D4D4`},language:`shellscript`,children:_jsxs(_components.code,{language:`shellscript`,numberOfLines:`3`,children:[_jsxs(_components.span,{className:`line`,children:[_jsx(_components.span,{style:{color:`#953800`,\"--shiki-dark\":`#DCDCAA`},children:`Cross-Origin`}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:` Request`}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:` Blocked:`}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:` The`}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:` Same`}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:` Origin`}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:` Policy`}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:` disallows`}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:` reading`})]}),`\n`,_jsxs(_components.span,{className:`line`,children:[_jsx(_components.span,{style:{color:`#953800`,\"--shiki-dark\":`#DCDCAA`},children:`the`}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:` remote`}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:` resource`}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:` at`}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:` https://api.box.com/2.0/users/me.`}),_jsx(_components.span,{style:{color:`#1F2328`,\"--shiki-dark\":`#D4D4D4`},children:` (Reason: `}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:`CORS`})]}),`\n`,_jsxs(_components.span,{className:`line`,children:[_jsx(_components.span,{style:{color:`#953800`,\"--shiki-dark\":`#DCDCAA`},children:`request`}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:` did`}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:` not`}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:` succeed`}),_jsx(_components.span,{style:{color:`#1F2328`,\"--shiki-dark\":`#D4D4D4`},children:`).`})]}),`\n`]})})}),`\n`,_jsx(_components.p,{children:`多くの場合、このエラーはCORSとはほとんど関係がありません。代わりに、以下を確認することをお勧めします。`}),`\n`,_jsxs(_components.ol,{children:[`\n`,_jsxs(_components.li,{children:[_jsx(_components.strong,{children:`認証ヘッダーを確認する`}),` - 認証ヘッダーが指定されていないか、またはその形式が正しくない場合、このAPIでは、必要な`,_jsx(_components.code,{children:`Access-Control-Allow-Origin`}),`ヘッダーなしで一般的なエラーが返されます。その結果、ブラウザで前述のエラーが発生します。必ず`,_jsx(_components.code,{children:`Authorization: Bearer ...`}),`ヘッダーを使用してアクセストークンを渡してください。`]}),`\n`,_jsxs(_components.li,{children:[_jsx(_components.strong,{children:`VPNやプロキシなどでブロックされたリクエストがないか確認する`}),` - 場合によっては、VPN、会社のプロキシ、ブラウザの機能拡張、DNSプロバイダ、またはネットワークトラフィックを妨害する可能性があるその他のサービスによってBox APIがブロックされている可能性があります。このようなサービスはどれも、リクエストをインターセプトし、必要な`,_jsx(_components.code,{children:`Access-Control-Allow-Origin`}),`ヘッダーが含まれていないまったく新しいリクエストを返す場合があります。このケースをテストするには、ブラウザ以外の環境、シークレットウィンドウ、またはまったく別の (会社が所有していない) 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