diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index d6832278e8..f3074ab0a4 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -78,4 +78,6 @@ jobs:
         cache: 'pnpm'
     - run: corepack enable
     - run: pnpm i --frozen-lockfile
+    - run: pnpm --filter misskey-js run build
+      if: ${{ matrix.workspace == 'backend' }}
     - run: pnpm --filter ${{ matrix.workspace }} run typecheck
diff --git a/CHANGELOG.md b/CHANGELOG.md
index b7f37d747d..95fcbbd881 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -28,6 +28,8 @@
 - Fix: 1702718871541-ffVisibility.jsのdownが壊れている
 - Fix:「非センシティブのみ（リモートはいいねのみ）」を設定していても、センシティブに設定されたカスタム絵文字をリアクションできる問題を修正
 - Fix: ロールアサイン時の通知で，ロールアイコンが縮小されずに表示される問題を修正
+- Fix: サードパーティアプリケーションがWebsocket APIに無条件にアクセスできる問題を修正
+- Fix: サードパーティアプリケーションがユーザーの許可なしに非公開の情報を見ることができる問題を修正
 
 ## 2023.12.0
 
diff --git a/packages/backend/src/server/api/endpoints/admin/accounts/create.ts b/packages/backend/src/server/api/endpoints/admin/accounts/create.ts
index a2f9bf6945..f54d567fff 100644
--- a/packages/backend/src/server/api/endpoints/admin/accounts/create.ts
+++ b/packages/backend/src/server/api/endpoints/admin/accounts/create.ts
@@ -15,8 +15,6 @@ import { DI } from '@/di-symbols.js';
 export const meta = {
 	tags: ['admin'],
 
-	secure: true,
-
 	res: {
 		type: 'object',
 		optional: false, nullable: false,
@@ -48,12 +46,12 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		private userEntityService: UserEntityService,
 		private signupService: SignupService,
 	) {
-		super(meta, paramDef, async (ps, _me) => {
+		super(meta, paramDef, async (ps, _me, token) => {
 			const me = _me ? await this.usersRepository.findOneByOrFail({ id: _me.id }) : null;
 			const noUsers = (await this.usersRepository.countBy({
 				host: IsNull(),
 			})) === 0;
-			if (!noUsers && !me?.isRoot) throw new Error('access denied');
+			if ((!noUsers && !me?.isRoot) || token !== null) throw new Error('access denied');
 
 			const { account, secret } = await this.signupService.signup({
 				username: ps.username,
diff --git a/packages/misskey-js/etc/misskey-js.api.md b/packages/misskey-js/etc/misskey-js.api.md
index 653372ba2c..d4c43f207c 100644
--- a/packages/misskey-js/etc/misskey-js.api.md
+++ b/packages/misskey-js/etc/misskey-js.api.md
@@ -2505,7 +2505,7 @@ type PagesUpdateRequest = operations['pages/update']['requestBody']['content']['
 function parse(acct: string): Acct;
 
 // @public (undocumented)
-export const permissions: string[];
+export const permissions: readonly ["read:account", "write:account", "read:blocks", "write:blocks", "read:drive", "write:drive", "read:favorites", "write:favorites", "read:following", "write:following", "read:messaging", "write:messaging", "read:mutes", "write:mutes", "write:notes", "read:notifications", "write:notifications", "read:reactions", "write:reactions", "write:votes", "read:pages", "write:pages", "write:page-likes", "read:page-likes", "read:user-groups", "write:user-groups", "read:channels", "write:channels", "read:gallery", "write:gallery", "read:gallery-likes", "write:gallery-likes", "read:flash", "write:flash", "read:flash-likes", "write:flash-likes", "read:admin:abuse-user-reports", "write:admin:delete-account", "write:admin:delete-all-files-of-a-user", "read:admin:index-stats", "read:admin:table-stats", "read:admin:user-ips", "read:admin:meta", "write:admin:reset-password", "write:admin:resolve-abuse-user-report", "write:admin:send-email", "read:admin:server-info", "read:admin:show-moderation-log", "read:admin:show-user", "read:admin:show-users", "write:admin:suspend-user", "write:admin:unset-user-avatar", "write:admin:unset-user-banner", "write:admin:unsuspend-user", "write:admin:meta", "write:admin:user-note", "write:admin:roles", "read:admin:roles", "write:admin:relays", "read:admin:relays", "write:admin:invite-codes", "read:admin:invite-codes", "write:admin:announcements", "read:admin:announcements", "write:admin:avatar-decorations", "read:admin:avatar-decorations", "write:admin:federation", "write:admin:account", "read:admin:account", "write:admin:emoji", "read:admin:emoji", "write:admin:queue", "read:admin:queue", "write:admin:promo", "write:admin:drive", "read:admin:drive", "write:admin:ad", "read:admin:ad", "write:invite-codes", "read:invite-codes", "write:clip-favorite", "read:clip-favorite", "read:federation", "write:report-abuse"];
 
 // @public (undocumented)
 type PingResponse = operations['ping']['responses']['200']['content']['application/json'];