security: fix critical auth gaps, SSRF, IDOR, and embedding error handling

CRITICAL:
- Add auth + admin check to 10 unprotected API routes (test-*, debug/*,
  config, models, fix-labels)
- Add CRON_SECRET bearer auth to /api/cron/reminders (was fully open)
- Add SSRF protection to getOllamaModels (blocks private/internal IPs)

HIGH:
- Fix getAllLabels() missing userId filter (leaked all users' labels)
- Fix /api/labels OR clause leaking other users' labels
- Fix IDOR in toggleAgent/getAgentActions (add ownership check)
- Fix getEmbeddings() returning [] on error in all 5 providers (corrupted
  semantic search with NaN cosine similarity) — now throws instead

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

memento-note/app/api/ai/config/route.ts

@@ -1,7 +1,16 @@
 import { NextRequest, NextResponse } from 'next/server'
 import { getSystemConfig } from '@/lib/config'
+import { auth } from '@/auth'
 
 export async function GET(request: NextRequest) {
+  const session = await auth()
+  if (!session?.user?.id) {
+    return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
+  }
+  if ((session.user as any).role !== 'ADMIN') {
+    return NextResponse.json({ error: 'Forbidden' }, { status: 403 })
+  }
+
   try {
     const config = await getSystemConfig()
 

memento-note/app/api/ai/models/route.ts

@@ -1,5 +1,6 @@
 import { NextRequest, NextResponse } from 'next/server'
 import { getSystemConfig } from '@/lib/config'
+import { auth } from '@/auth'
 
 // Modèles populaires pour chaque provider (2025)
 const PROVIDER_MODELS = {
@@ -41,6 +42,14 @@ const PROVIDER_MODELS = {
 }
 
 export async function GET(request: NextRequest) {
+  const session = await auth()
+  if (!session?.user?.id) {
+    return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
+  }
+  if ((session.user as any).role !== 'ADMIN') {
+    return NextResponse.json({ error: 'Forbidden' }, { status: 403 })
+  }
+
   try {
     const config = await getSystemConfig()
     const provider = (config.AI_PROVIDER || 'ollama').toLowerCase()

memento-note/app/api/ai/test-chat/route.ts

@@ -1,8 +1,17 @@
 import { NextRequest, NextResponse } from 'next/server'
 import { getChatProvider } from '@/lib/ai/factory'
 import { getSystemConfig } from '@/lib/config'
+import { auth } from '@/auth'
 
 export async function POST(request: NextRequest) {
+  const session = await auth()
+  if (!session?.user?.id) {
+    return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
+  }
+  if ((session.user as any).role !== 'ADMIN') {
+    return NextResponse.json({ error: 'Forbidden' }, { status: 403 })
+  }
+
   try {
     const config = await getSystemConfig()
     const provider = getChatProvider(config)

memento-note/app/api/ai/test-embeddings/route.ts

@@ -1,6 +1,7 @@
 import { NextRequest, NextResponse } from 'next/server'
 import { getEmbeddingsProvider } from '@/lib/ai/factory'
 import { getSystemConfig } from '@/lib/config'
+import { auth } from '@/auth'
 
 function getProviderDetails(config: Record<string, string>, providerType: string) {
   const provider = providerType.toLowerCase()
@@ -34,6 +35,14 @@ function getProviderDetails(config: Record<string, string>, providerType: string
 }
 
 export async function POST(request: NextRequest) {
+  const session = await auth()
+  if (!session?.user?.id) {
+    return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
+  }
+  if ((session.user as any).role !== 'ADMIN') {
+    return NextResponse.json({ error: 'Forbidden' }, { status: 403 })
+  }
+
   try {
     const config = await getSystemConfig()
     const provider = getEmbeddingsProvider(config)

memento-note/app/api/ai/test-tags/route.ts

@@ -1,8 +1,17 @@
 import { NextRequest, NextResponse } from 'next/server'
 import { getTagsProvider } from '@/lib/ai/factory'
 import { getSystemConfig } from '@/lib/config'
+import { auth } from '@/auth'
 
 export async function POST(request: NextRequest) {
+  const session = await auth()
+  if (!session?.user?.id) {
+    return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
+  }
+  if ((session.user as any).role !== 'ADMIN') {
+    return NextResponse.json({ error: 'Forbidden' }, { status: 403 })
+  }
+
   try {
     const config = await getSystemConfig()
     const provider = getTagsProvider(config)

memento-note/app/api/ai/test/route.ts

@@ -1,6 +1,7 @@
 import { NextRequest, NextResponse } from 'next/server'
 import { getTagsProvider, getEmbeddingsProvider } from '@/lib/ai/factory'
 import { getSystemConfig } from '@/lib/config'
+import { auth } from '@/auth'
 
 function getProviderDetails(config: Record<string, string>, providerType: string) {
   const provider = providerType.toLowerCase()
@@ -34,6 +35,14 @@ function getProviderDetails(config: Record<string, string>, providerType: string
 }
 
 export async function GET(request: NextRequest) {
+  const session = await auth()
+  if (!session?.user?.id) {
+    return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
+  }
+  if ((session.user as any).role !== 'ADMIN') {
+    return NextResponse.json({ error: 'Forbidden' }, { status: 403 })
+  }
+
   try {
     const config = await getSystemConfig()
     const tagsProvider = getTagsProvider(config)

memento-note/app/api/ai/web-search-available/route.ts

@@ -1,7 +1,13 @@
 import { NextResponse } from 'next/server'
 import { getSystemConfig } from '@/lib/config'
+import { auth } from '@/auth'
 
 export async function GET() {
+  const session = await auth()
+  if (!session?.user?.id) {
+    return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
+  }
+
   try {
     const config = await getSystemConfig()
     const available = !!(

memento-note/app/api/cron/reminders/route.ts

@@ -1,9 +1,19 @@
-import { NextResponse } from 'next/server';
+import { NextRequest, NextResponse } from 'next/server';
 import prisma from '@/lib/prisma';
 
 export const dynamic = 'force-dynamic'; // No caching
 
-export async function POST(request: Request) {
+export async function POST(request: NextRequest) {
+  // Optional auth: set CRON_SECRET env var, callers must pass
+  // Authorization: Bearer <CRON_SECRET>
+  const cronSecret = process.env.CRON_SECRET
+  if (cronSecret) {
+    const authHeader = request.headers.get('authorization')
+    if (authHeader !== `Bearer ${cronSecret}`) {
+      return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
+    }
+  }
+
   try {
     const now = new Date();
 

memento-note/app/api/debug/config/route.ts

@@ -1,11 +1,20 @@
 import { NextResponse } from 'next/server';
 import { getSystemConfig } from '@/lib/config';
+import { auth } from '@/auth';
 
 /**
  * Debug endpoint to check AI configuration
  * This helps verify that OpenAI is properly configured
  */
 export async function GET() {
+  const session = await auth()
+  if (!session?.user?.id) {
+    return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
+  }
+  if ((session.user as any).role !== 'ADMIN') {
+    return NextResponse.json({ error: 'Forbidden' }, { status: 403 })
+  }
+
   try {
     const config = await getSystemConfig();
 

memento-note/app/api/debug/test-chat/route.ts

@@ -1,7 +1,16 @@
 import { NextResponse } from 'next/server';
 import { chatService } from '@/lib/ai/services/chat.service';
+import { auth } from '@/auth';
 
 export async function POST(req: Request) {
+  const session = await auth()
+  if (!session?.user?.id) {
+    return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
+  }
+  if ((session.user as any).role !== 'ADMIN') {
+    return NextResponse.json({ error: 'Forbidden' }, { status: 403 })
+  }
+
   try {
     const body = await req.json();
     console.log("TEST ROUTE INCOMING BODY:", body);

memento-note/app/api/fix-labels/route.ts

@@ -1,6 +1,7 @@
 import { NextResponse } from 'next/server'
 import prisma from '@/lib/prisma'
 import { revalidatePath } from 'next/cache'
+import { auth } from '@/auth'
 
 function getHashColor(name: string): string {
   const colors = ['red', 'blue', 'green', 'yellow', 'purple', 'pink', 'orange', 'gray']
@@ -12,6 +13,14 @@ function getHashColor(name: string): string {
 }
 
 export async function POST() {
+  const session = await auth()
+  if (!session?.user?.id) {
+    return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
+  }
+  if ((session.user as any).role !== 'ADMIN') {
+    return NextResponse.json({ error: 'Forbidden' }, { status: 403 })
+  }
+
   try {
     const result = { created: 0, deleted: 0, missing: [] as string[] }
 

memento-note/app/api/labels/route.ts

@@ -25,11 +25,8 @@ export async function GET(request: NextRequest) {
       // Get labels for a specific notebook
       where.notebookId = notebookId
     } else {
-      // Get all labels for the user (both old and new system)
-      where.OR = [
-        { notebookId: { not: null } },
-        { userId: session.user.id }
-      ]
+      // Get all labels for the user
+      where.userId = session.user.id
     }
 
     const labels = await prisma.label.findMany({