diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 2e52475cd..178d84a17 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -68,7 +68,7 @@ jobs:
 
       - name: Get Composer Cache Directory
         id: composer-cache
-        run: echo "::set-output name=dir::$(composer config cache-files-dir)"
+        run: echo "dir=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
 
       - name: Cache dependencies
         uses: actions/cache@v4
@@ -98,3 +98,11 @@ jobs:
         with:
           project-token: ${{ secrets.CODACY_PROJECT_TOKEN }}
           coverage-reports: ./test-coverage.xml
+
+      - name: Upload Laravel logs on failure
+        if: ${{ failure() }}
+        uses: actions/upload-artifact@v4
+        with:
+          name: logs-test-php-${{ matrix.php-versions }}
+          path: storage/logs/**
+          if-no-files-found: ignore
diff --git a/app/Helper/Sharing.php b/app/Helper/Sharing.php
index 42c55c928..d0ceaf558 100644
--- a/app/Helper/Sharing.php
+++ b/app/Helper/Sharing.php
@@ -44,9 +44,9 @@ protected static function generateLinkData(Link $link): array
         return [
             $link->url, // URL
             self::encode($link->url), // encoded URL
-            $subject, // subject
+            htmlentities($subject), // subject
             self::encode($subject), // encoded subject
-            $shareText, // share text
+            htmlentities($shareText), // share text
             self::encode($shareText), // encoded share text
         ];
     }
diff --git a/app/Http/Controllers/App/ExportController.php b/app/Http/Controllers/App/ExportController.php
index 83b2bcd54..bf45dab5b 100644
--- a/app/Http/Controllers/App/ExportController.php
+++ b/app/Http/Controllers/App/ExportController.php
@@ -32,7 +32,7 @@ public function getExport(): View
      */
     public function doHtmlExport(): StreamedResponse
     {
-        $links = Link::oldest('title')->with('tags')->get();
+        $links = Link::whereUserId(auth()->id())->oldest('title')->with('tags')->get();
 
         $fileContent = view()->make('app.export.html-export', ['links' => $links])->render();
         $fileName = config('app.name') . '_export.html';
@@ -51,11 +51,11 @@ public function doHtmlExport(): StreamedResponse
      */
     public function doCsvExport()
     {
-        $links = Link::oldest('title')->get();
+        $links = Link::whereUserId(auth()->id())->oldest('title')->get();
 
         $rows = $links->map(function (Link $link) {
-            $link->tags = $link->tags()->get()->pluck('name')->join(',');
-            $link->lists = $link->lists()->get()->pluck('name')->join(',');
+            $link->tags = $link->tags()->visibleForUser()->get()->pluck('name')->join(',');
+            $link->lists = $link->lists()->visibleForUser()->get()->pluck('name')->join(',');
             return $link;
         })->toArray();
 
diff --git a/app/Http/Controllers/App/FeedController.php b/app/Http/Controllers/App/FeedController.php
index bb3e232c1..9fba3f33c 100644
--- a/app/Http/Controllers/App/FeedController.php
+++ b/app/Http/Controllers/App/FeedController.php
@@ -13,7 +13,7 @@ class FeedController extends Controller
 {
     public function links(Request $request): Response
     {
-        $links = Link::latest()->with('user')->get();
+        $links = Link::visibleForUser()->latest()->with('user')->get();
         $meta = [
             'title' => 'LinkAce Links',
             'link' => $request->fullUrl(),
@@ -29,7 +29,7 @@ public function links(Request $request): Response
 
     public function lists(Request $request): Response
     {
-        $lists = LinkList::latest()->with('user')->get();
+        $lists = LinkList::visibleForUser()->latest()->with('user')->get();
         $meta = [
             'title' => 'LinkAce Lists',
             'link' => $request->fullUrl(),
@@ -45,7 +45,7 @@ public function lists(Request $request): Response
 
     public function listLinks(Request $request, LinkList $list): Response
     {
-        $links = $list->links()->with('user')->latest()->get();
+        $links = $list->links()->visibleForUser()->with('user')->latest()->get();
         $meta = [
             'title' => $list->name,
             'link' => $request->fullUrl(),
@@ -61,7 +61,7 @@ public function listLinks(Request $request, LinkList $list): Response
 
     public function tags(Request $request): Response
     {
-        $tags = Tag::latest()->with('user')->get();
+        $tags = Tag::visibleForUser()->latest()->with('user')->get();
         $meta = [
             'title' => 'LinkAce Links',
             'link' => $request->fullUrl(),
@@ -77,7 +77,7 @@ public function tags(Request $request): Response
 
     public function tagLinks(Request $request, Tag $tag): Response
     {
-        $links = $tag->links()->with('user')->latest()->get();
+        $links = $tag->links()->visibleForUser()->with('user')->latest()->get();
         $meta = [
             'title' => $tag->name,
             'link' => $request->fullUrl(),
diff --git a/app/Http/Controllers/FetchController.php b/app/Http/Controllers/FetchController.php
index 1f0317e97..457d17911 100644
--- a/app/Http/Controllers/FetchController.php
+++ b/app/Http/Controllers/FetchController.php
@@ -6,6 +6,7 @@
 use App\Models\Link;
 use App\Models\LinkList;
 use App\Models\Tag;
+use App\Rules\NoPrivateIpRule;
 use Illuminate\Http\JsonResponse;
 use Illuminate\Http\Request;
 use Masterminds\HTML5;
@@ -92,10 +93,10 @@ public static function checkForUpdates(): JsonResponse
      * @param Request $request
      * @return JsonResponse
      */
-    public function htmlKeywordsFromUrl(Request $request)
+    public function htmlKeywordsFromUrl(Request $request): JsonResponse
     {
         $request->validate([
-            'url' => ['url'],
+            'url' => ['url', new NoPrivateIpRule],
         ]);
 
         $url = $request->input('url');
diff --git a/app/Rules/NoPrivateIpRule.php b/app/Rules/NoPrivateIpRule.php
new file mode 100644
index 000000000..19d236e43
--- /dev/null
+++ b/app/Rules/NoPrivateIpRule.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace App\Rules;
+
+use Closure;
+use Illuminate\Contracts\Validation\ValidationRule;
+
+class NoPrivateIpRule implements ValidationRule
+{
+    public function validate(string $attribute, mixed $value, Closure $fail): void
+    {
+        $domain = parse_url($value, PHP_URL_HOST);
+
+        if (filter_var($domain, FILTER_VALIDATE_IP) === false) {
+            // Hostname is not an IP address
+            return;
+        }
+
+        if (filter_var($domain, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE) === false) {
+            // Hostname contains an IP address from the private or reserved ranges
+            $fail(trans('validation.no_private_ip'));
+        }
+    }
+}
diff --git a/lang/en_US/validation.php b/lang/en_US/validation.php
index 534f4fd06..5dbbaf9e6 100644
--- a/lang/en_US/validation.php
+++ b/lang/en_US/validation.php
@@ -88,6 +88,7 @@
         'string'  => 'The :attribute must be at least :min characters.',
         'array'   => 'The :attribute must have at least :min items.',
     ],
+    'no_private_ip'        => 'The given URL must not contain a private IP address.',
     'not_in'               => 'The selected :attribute is invalid.',
     'not_regex'            => 'The :attribute format is invalid.',
     'numeric'              => 'The :attribute must be a number.',
diff --git a/package-lock.json b/package-lock.json
index d20936e73..cd7062954 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "linkace",
-  "version": "2.3.1",
+  "version": "2.4.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "linkace",
-      "version": "2.3.1",
+      "version": "2.4.0",
       "license": "GPL-3.0-or-later",
       "dependencies": {
         "bootstrap": "^5.3.3",
diff --git a/package.json b/package.json
index 75f6fd99a..e7d431206 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "linkace",
-  "version": "2.3.1",
+  "version": "2.4.0",
   "description": "A small, selfhosted bookmark manager with advanced features, built with Laravel and Docker",
   "homepage": "https://github.com/Kovah/LinkAce",
   "repository": {
diff --git a/tests/Controller/App/ExportControllerTest.php b/tests/Controller/App/ExportControllerTest.php
index 64c842d0f..dfda6c872 100644
--- a/tests/Controller/App/ExportControllerTest.php
+++ b/tests/Controller/App/ExportControllerTest.php
@@ -2,6 +2,7 @@
 
 namespace Tests\Controller\App;
 
+use App\Enums\ModelAttribute;
 use App\Models\Link;
 use App\Models\User;
 use Illuminate\Foundation\Testing\RefreshDatabase;
@@ -33,6 +34,9 @@ public function test_valid_export_response(): void
 
     public function test_valid_html_export_generation(): void
     {
+        $otherUser = User::factory()->create();
+        $otherLink = Link::factory()->for($otherUser)->create(['visibility' => ModelAttribute::VISIBILITY_PRIVATE]);
+
         $response = $this->post('export/html');
         $response->assertOk();
 
@@ -42,6 +46,7 @@ public function test_valid_html_export_generation(): void
             '<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">',
             $content
         );
+        $this->assertStringNotContainsString($otherLink->url, $content);
     }
 
     public function test_valid_csv_export_generation(): void
@@ -49,6 +54,9 @@ public function test_valid_csv_export_generation(): void
         /** @var Link $link */
         $link = Link::inRandomOrder()->first();
 
+        $otherUser = User::factory()->create();
+        $otherLink = Link::factory()->for($otherUser)->create(['visibility' => ModelAttribute::VISIBILITY_PRIVATE]);
+
         $response = $this->post('export/csv');
         $response->assertOk();
 
@@ -58,5 +66,6 @@ public function test_valid_csv_export_generation(): void
             sprintf('%s,%s,%s', $link->id, $link->user_id, $link->url),
             $content
         );
+        $this->assertStringNotContainsString($otherLink->url, $content);
     }
 }
diff --git a/tests/Controller/App/FeedControllerTest.php b/tests/Controller/App/FeedControllerTest.php
index 9e3f8f4a6..2cb57e337 100644
--- a/tests/Controller/App/FeedControllerTest.php
+++ b/tests/Controller/App/FeedControllerTest.php
@@ -3,6 +3,7 @@
 namespace Tests\Controller\App;
 
 use App\Enums\ApiToken;
+use App\Enums\ModelAttribute;
 use App\Models\Link;
 use App\Models\LinkList;
 use App\Models\Tag;
@@ -35,18 +36,24 @@ public function test_links_feed(): void
     {
         $link = Link::factory()->create();
 
+        $otherUser = User::factory()->create();
+        $otherLink = Link::factory()->for($otherUser)->create(['visibility' => ModelAttribute::VISIBILITY_PRIVATE]);
+
         $response = $this->getAuthorized('links/feed');
 
-        $response->assertOk()->assertSee($link->url);
+        $response->assertOk()->assertSee($link->url)->assertDontSee($otherLink->url);
     }
 
     public function test_lists_feed(): void
     {
         $list = LinkList::factory()->create();
 
+        $otherUser = User::factory()->create();
+        $otherTList = LinkList::factory()->for($otherUser)->create(['visibility' => ModelAttribute::VISIBILITY_PRIVATE]);
+
         $response = $this->getAuthorized('lists/feed');
 
-        $response->assertOk()->assertSee($list->name);
+        $response->assertOk()->assertSee($list->name)->assertDontSee($otherTList->name);
     }
 
     public function test_list_link_feed(): void
@@ -55,13 +62,17 @@ public function test_list_link_feed(): void
         $listLink = Link::factory()->create();
         $unrelatedLink = Link::factory()->create();
 
-        $listLink->lists()->sync([$link->id]);
+        $otherUser = User::factory()->create();
+        $otherLink = Link::factory()->for($otherUser)->create(['visibility' => ModelAttribute::VISIBILITY_PRIVATE]);
+
+        $listLink->lists()->sync([$link->id, $otherLink->id]);
 
         $response = $this->getAuthorized('lists/1/feed');
 
         $response->assertOk()
             ->assertSee($link->name)
             ->assertSee($listLink->url)
+            ->assertDontSee($otherLink->url)
             ->assertDontSee($unrelatedLink->url);
     }
 
@@ -69,9 +80,12 @@ public function test_tags_feed(): void
     {
         $tag = Tag::factory()->create();
 
+        $otherUser = User::factory()->create();
+        $otherTag = Tag::factory()->for($otherUser)->create(['visibility' => ModelAttribute::VISIBILITY_PRIVATE]);
+
         $response = $this->getAuthorized('tags/feed');
 
-        $response->assertOk()->assertSee($tag->name);
+        $response->assertOk()->assertSee($tag->name)->assertDontSee($otherTag->name);
     }
 
     public function test_tag_link_feed(): void
@@ -80,13 +94,17 @@ public function test_tag_link_feed(): void
         $tagLink = Link::factory()->create();
         $unrelatedLink = Link::factory()->create();
 
-        $tagLink->tags()->sync([$tag->id]);
+        $otherUser = User::factory()->create();
+        $otherLink = Link::factory()->for($otherUser)->create(['visibility' => ModelAttribute::VISIBILITY_PRIVATE]);
+
+        $tagLink->tags()->sync([$tag->id, $otherLink->id]);
 
         $response = $this->getAuthorized('tags/1/feed');
 
         $response->assertOk()
             ->assertSee($tag->name)
             ->assertSee($tagLink->url)
+            ->assertDontSee($otherLink->url)
             ->assertDontSee($unrelatedLink->url);
     }
 
diff --git a/tests/Controller/FetchControllerTest.php b/tests/Controller/FetchControllerTest.php
index 7966f65b6..ba4ec27da 100644
--- a/tests/Controller/FetchControllerTest.php
+++ b/tests/Controller/FetchControllerTest.php
@@ -115,6 +115,34 @@ public function test_get_keywords_for_invalid_url(): void
         $response->assertSessionHasErrors('url');
     }
 
+    public function test_get_keywords_for_private_ip_url(): void
+    {
+        $response = $this->post('fetch/keywords-for-url', [
+            'url' => 'http://192.168.0.126/admin',
+        ]);
+
+        $response->assertSessionHasErrors(['url' => 'The given URL must not contain a private IP address.']);
+    }
+
+    public function test_get_keywords_for_public_ip_url(): void
+    {
+        $testHtml = '<!DOCTYPE html><head>' .
+            '<title>Example Title</title>' .
+            '<meta name="description" content="This an example description">' .
+            '<meta name="keywords" content="html, css, javascript">' .
+            '</head></html>';
+
+        Http::fake([
+            '104.102.37.33' => Http::response($testHtml, 200),
+        ]);
+
+        $response = $this->post('fetch/keywords-for-url', [
+            'url' => 'http://104.102.37.33/research/cold_fusion.html',
+        ]);
+
+        $response->assertSessionHasNoErrors();
+    }
+
     public function test_get_keywords_for_url_with_failure(): void
     {
         Http::fake([