diff --git a/src/components/moderation/ModerationQueue.tsx b/src/components/moderation/ModerationQueue.tsx
index 7b083382..6788aee6 100644
--- a/src/components/moderation/ModerationQueue.tsx
+++ b/src/components/moderation/ModerationQueue.tsx
@@ -1202,20 +1202,29 @@ export const ModerationQueue = forwardRef<ModerationQueueRef>((props, ref) => {
                                 src={photo.url}
                                 alt={`Photo ${index + 1}: ${photo.filename}`}
                                 className="w-full max-h-64 object-contain rounded hover:opacity-80 transition-opacity"
-                                onError={(e) => {
-                                  console.error('Failed to load photo submission:', photo);
-                                  const target = e.target as HTMLImageElement;
-                                  target.style.display = 'none';
-                                  const parent = target.parentElement;
-                                  if (parent) {
-                                    parent.innerHTML = `
-                                      <div class="absolute inset-0 flex flex-col items-center justify-center text-destructive text-xs">
-                                        <div>⚠️ Image failed to load</div>
-                                        <div class="mt-1 font-mono text-xs break-all px-2">${photo.url}</div>
-                                      </div>
-                                    `;
-                                  }
-                                }}
+                onError={(e) => {
+                  console.error('Failed to load photo submission:', photo);
+                  const target = e.target as HTMLImageElement;
+                  target.style.display = 'none';
+                  const parent = target.parentElement;
+                  if (parent) {
+                    // Create elements safely using DOM API to prevent XSS
+                    const errorContainer = document.createElement('div');
+                    errorContainer.className = 'absolute inset-0 flex flex-col items-center justify-center text-destructive text-xs';
+                    
+                    const errorIcon = document.createElement('div');
+                    errorIcon.textContent = '⚠️ Image failed to load';
+                    
+                    const urlDisplay = document.createElement('div');
+                    urlDisplay.className = 'mt-1 font-mono text-xs break-all px-2';
+                    // Use textContent to prevent XSS - it escapes HTML automatically
+                    urlDisplay.textContent = photo.url;
+                    
+                    errorContainer.appendChild(errorIcon);
+                    errorContainer.appendChild(urlDisplay);
+                    parent.appendChild(errorContainer);
+                  }
+                }}
                               />
                               <div className="absolute inset-0 flex items-center justify-center bg-black/50 text-white opacity-0 hover:opacity-100 transition-opacity rounded">
                                 <Eye className="w-5 h-5" />
diff --git a/src/components/settings/SessionsTab.tsx b/src/components/settings/SessionsTab.tsx
new file mode 100644
index 00000000..ede59601
--- /dev/null
+++ b/src/components/settings/SessionsTab.tsx
@@ -0,0 +1,123 @@
+import { useState, useEffect } from 'react';
+import { supabase } from '@/integrations/supabase/client';
+import { useAuth } from '@/hooks/useAuth';
+import { Button } from '@/components/ui/button';
+import { Card } from '@/components/ui/card';
+import { useToast } from '@/hooks/use-toast';
+import { Monitor, Smartphone, Tablet, Trash2 } from 'lucide-react';
+import { format } from 'date-fns';
+
+interface UserSession {
+  id: string;
+  device_info: any;
+  last_activity: string;
+  created_at: string;
+  expires_at: string;
+  session_token: string;
+}
+
+export function SessionsTab() {
+  const { user } = useAuth();
+  const { toast } = useToast();
+  const [sessions, setSessions] = useState<UserSession[]>([]);
+  const [loading, setLoading] = useState(true);
+
+  const fetchSessions = async () => {
+    if (!user) return;
+    
+    const { data, error } = await supabase
+      .from('user_sessions')
+      .select('*')
+      .eq('user_id', user.id)
+      .order('last_activity', { ascending: false });
+    
+    if (error) {
+      console.error('Error fetching sessions:', error);
+    } else {
+      setSessions(data || []);
+    }
+    setLoading(false);
+  };
+
+  useEffect(() => {
+    fetchSessions();
+  }, [user]);
+
+  const revokeSession = async (sessionId: string) => {
+    const { error } = await supabase
+      .from('user_sessions')
+      .delete()
+      .eq('id', sessionId);
+    
+    if (error) {
+      toast({
+        title: 'Error',
+        description: 'Failed to revoke session',
+        variant: 'destructive'
+      });
+    } else {
+      toast({
+        title: 'Success',
+        description: 'Session revoked successfully'
+      });
+      fetchSessions();
+    }
+  };
+
+  const getDeviceIcon = (deviceInfo: any) => {
+    const ua = deviceInfo?.userAgent?.toLowerCase() || '';
+    if (ua.includes('mobile')) return <Smartphone className="w-4 h-4" />;
+    if (ua.includes('tablet')) return <Tablet className="w-4 h-4" />;
+    return <Monitor className="w-4 h-4" />;
+  };
+
+  if (loading) {
+    return <div className="text-muted-foreground">Loading sessions...</div>;
+  }
+
+  return (
+    <div className="space-y-4">
+      <div>
+        <h3 className="text-lg font-semibold">Active Sessions</h3>
+        <p className="text-sm text-muted-foreground">
+          Manage your active login sessions across devices
+        </p>
+      </div>
+
+      {sessions.map((session) => (
+        <Card key={session.id} className="p-4">
+          <div className="flex items-start justify-between">
+            <div className="flex gap-3">
+              {getDeviceIcon(session.device_info)}
+              <div>
+                <div className="font-medium">
+                  {session.device_info?.browser || 'Unknown Browser'}
+                </div>
+                <div className="text-sm text-muted-foreground">
+                  Last active: {format(new Date(session.last_activity), 'PPpp')}
+                </div>
+                <div className="text-sm text-muted-foreground">
+                  Expires: {format(new Date(session.expires_at), 'PPpp')}
+                </div>
+              </div>
+            </div>
+            <Button
+              variant="destructive"
+              size="sm"
+              onClick={() => revokeSession(session.id)}
+            >
+              <Trash2 className="w-4 h-4 mr-2" />
+              Revoke
+            </Button>
+          </div>
+        </Card>
+      ))}
+
+      {sessions.length === 0 && (
+        <Card className="p-8 text-center text-muted-foreground">
+          No active sessions found
+        </Card>
+      )}
+    </div>
+  );
+}
diff --git a/src/integrations/supabase/types.ts b/src/integrations/supabase/types.ts
index 7bf71017..d48f427b 100644
--- a/src/integrations/supabase/types.ts
+++ b/src/integrations/supabase/types.ts
@@ -2038,6 +2038,7 @@ export type Database = {
           expires_at: string
           id: string
           ip_address: unknown | null
+          ip_address_hash: string | null
           last_activity: string
           session_token: string
           user_agent: string | null
@@ -2049,6 +2050,7 @@ export type Database = {
           expires_at?: string
           id?: string
           ip_address?: unknown | null
+          ip_address_hash?: string | null
           last_activity?: string
           session_token: string
           user_agent?: string | null
@@ -2060,6 +2062,7 @@ export type Database = {
           expires_at?: string
           id?: string
           ip_address?: unknown | null
+          ip_address_hash?: string | null
           last_activity?: string
           session_token?: string
           user_agent?: string | null
@@ -2174,6 +2177,10 @@ export type Database = {
         Args: Record<PropertyKey, never>
         Returns: boolean
       }
+      cleanup_expired_sessions: {
+        Args: Record<PropertyKey, never>
+        Returns: undefined
+      }
       extract_cf_image_id: {
         Args: { url: string }
         Returns: string
@@ -2205,6 +2212,10 @@ export type Database = {
         }
         Returns: boolean
       }
+      hash_ip_address: {
+        Args: { ip_text: string }
+        Returns: string
+      }
       is_moderator: {
         Args: { _user_id: string }
         Returns: boolean
diff --git a/src/pages/UserSettings.tsx b/src/pages/UserSettings.tsx
index f0ee4e8a..a6abbfbc 100644
--- a/src/pages/UserSettings.tsx
+++ b/src/pages/UserSettings.tsx
@@ -1,12 +1,13 @@
 import { useState } from 'react';
 import { Tabs, TabsContent, TabsList, TabsTrigger } from '@/components/ui/tabs';
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
-import { Settings, User, Shield, Eye, Bell, MapPin, Download } from 'lucide-react';
+import { Settings, User, Shield, Eye, Bell, MapPin, Download, MonitorSmartphone } from 'lucide-react';
 import { useAuth } from '@/hooks/useAuth';
 import { Navigate } from 'react-router-dom';
 import { Header } from '@/components/layout/Header';
 import { AccountProfileTab } from '@/components/settings/AccountProfileTab';
 import { SecurityTab } from '@/components/settings/SecurityTab';
+import { SessionsTab } from '@/components/settings/SessionsTab';
 import { PrivacyTab } from '@/components/settings/PrivacyTab';
 import { NotificationsTab } from '@/components/settings/NotificationsTab';
 import { LocationTab } from '@/components/settings/LocationTab';
@@ -49,6 +50,12 @@ export default function UserSettings() {
       icon: Shield,
       component: SecurityTab
     },
+    {
+      id: 'sessions',
+      label: 'Sessions',
+      icon: MonitorSmartphone,
+      component: SessionsTab
+    },
     {
       id: 'privacy',
       label: 'Privacy',
@@ -91,7 +98,7 @@ export default function UserSettings() {
 
         {/* Settings Tabs */}
         <Tabs value={activeTab} onValueChange={setActiveTab} className="space-y-6">
-          <TabsList className="grid w-full grid-cols-2 lg:grid-cols-6 h-auto p-1">
+          <TabsList className="grid w-full grid-cols-2 lg:grid-cols-7 h-auto p-1">
             {tabs.map((tab) => {
               const Icon = tab.icon;
               return (
diff --git a/supabase/migrations/20251004011041_e87f91c8-b2bc-4f4a-9187-534edf92bd81.sql b/supabase/migrations/20251004011041_e87f91c8-b2bc-4f4a-9187-534edf92bd81.sql
new file mode 100644
index 00000000..ec2d0c3f
--- /dev/null
+++ b/supabase/migrations/20251004011041_e87f91c8-b2bc-4f4a-9187-534edf92bd81.sql
@@ -0,0 +1,200 @@
+-- =====================================================
+-- CRITICAL SECURITY FIXES - Priority 1 & 2
+-- =====================================================
+
+-- =====================================================
+-- 1. PREVENT PRIVILEGE ESCALATION
+-- =====================================================
+
+-- Function to prevent unauthorized superuser role assignment
+CREATE OR REPLACE FUNCTION public.prevent_superuser_escalation()
+RETURNS TRIGGER
+LANGUAGE plpgsql
+SECURITY DEFINER
+SET search_path = public
+AS $$
+BEGIN
+  -- If trying to grant superuser role
+  IF NEW.role = 'superuser' THEN
+    -- Only existing superusers can grant superuser role
+    IF NOT EXISTS (
+      SELECT 1 FROM public.user_roles
+      WHERE user_id = auth.uid()
+        AND role = 'superuser'
+    ) THEN
+      RAISE EXCEPTION 'Only superusers can grant the superuser role';
+    END IF;
+  END IF;
+  
+  RETURN NEW;
+END;
+$$;
+
+-- Apply trigger to user_roles INSERT
+DROP TRIGGER IF EXISTS enforce_superuser_escalation_prevention ON public.user_roles;
+CREATE TRIGGER enforce_superuser_escalation_prevention
+  BEFORE INSERT ON public.user_roles
+  FOR EACH ROW
+  EXECUTE FUNCTION public.prevent_superuser_escalation();
+
+-- Function to prevent unauthorized modification of superuser roles
+CREATE OR REPLACE FUNCTION public.prevent_superuser_role_removal()
+RETURNS TRIGGER
+LANGUAGE plpgsql
+SECURITY DEFINER
+SET search_path = public
+AS $$
+BEGIN
+  -- If trying to delete a superuser role
+  IF OLD.role = 'superuser' THEN
+    -- Only existing superusers can remove superuser roles
+    IF NOT EXISTS (
+      SELECT 1 FROM public.user_roles
+      WHERE user_id = auth.uid()
+        AND role = 'superuser'
+    ) THEN
+      RAISE EXCEPTION 'Only superusers can remove the superuser role';
+    END IF;
+  END IF;
+  
+  RETURN OLD;
+END;
+$$;
+
+-- Apply trigger to user_roles DELETE
+DROP TRIGGER IF EXISTS enforce_superuser_removal_prevention ON public.user_roles;
+CREATE TRIGGER enforce_superuser_removal_prevention
+  BEFORE DELETE ON public.user_roles
+  FOR EACH ROW
+  EXECUTE FUNCTION public.prevent_superuser_role_removal();
+
+-- Function to audit all role changes
+CREATE OR REPLACE FUNCTION public.audit_role_changes()
+RETURNS TRIGGER
+LANGUAGE plpgsql
+SECURITY DEFINER
+SET search_path = public
+AS $$
+BEGIN
+  IF TG_OP = 'INSERT' THEN
+    INSERT INTO public.admin_audit_log (
+      admin_user_id,
+      target_user_id,
+      action,
+      details
+    ) VALUES (
+      auth.uid(),
+      NEW.user_id,
+      'role_granted',
+      jsonb_build_object(
+        'role', NEW.role,
+        'timestamp', now()
+      )
+    );
+  ELSIF TG_OP = 'DELETE' THEN
+    INSERT INTO public.admin_audit_log (
+      admin_user_id,
+      target_user_id,
+      action,
+      details
+    ) VALUES (
+      auth.uid(),
+      OLD.user_id,
+      'role_revoked',
+      jsonb_build_object(
+        'role', OLD.role,
+        'timestamp', now()
+      )
+    );
+  END IF;
+  
+  RETURN COALESCE(NEW, OLD);
+END;
+$$;
+
+-- Apply trigger to user_roles
+DROP TRIGGER IF EXISTS audit_role_changes_trigger ON public.user_roles;
+CREATE TRIGGER audit_role_changes_trigger
+  AFTER INSERT OR DELETE ON public.user_roles
+  FOR EACH ROW
+  EXECUTE FUNCTION public.audit_role_changes();
+
+-- =====================================================
+-- 2. RESTRICT PUBLIC PROFILE ACCESS
+-- =====================================================
+
+-- Remove overly permissive policy
+DROP POLICY IF EXISTS "Public can view basic profile info only" ON public.profiles;
+
+-- New policy: Authenticated users can view profiles
+CREATE POLICY "Authenticated users can view profiles"
+ON public.profiles
+FOR SELECT
+TO authenticated
+USING (
+  -- Users can view their own profile completely
+  (auth.uid() = user_id)
+  OR
+  -- Moderators can view all profiles
+  is_moderator(auth.uid())
+  OR
+  -- Others can only view public, non-banned profiles
+  (privacy_level = 'public' AND NOT banned)
+);
+
+-- =====================================================
+-- 3. SESSION SECURITY ENHANCEMENTS
+-- =====================================================
+
+-- Function to hash IP addresses for privacy
+CREATE OR REPLACE FUNCTION public.hash_ip_address(ip_text text)
+RETURNS text
+LANGUAGE plpgsql
+IMMUTABLE
+AS $$
+BEGIN
+  -- Use SHA256 hash with salt
+  RETURN encode(
+    digest(ip_text || 'thrillwiki_ip_salt_2025', 'sha256'),
+    'hex'
+  );
+END;
+$$;
+
+-- Add hashed IP column if not exists
+ALTER TABLE public.user_sessions
+ADD COLUMN IF NOT EXISTS ip_address_hash text;
+
+-- Update existing records (hash current IPs)
+UPDATE public.user_sessions
+SET ip_address_hash = public.hash_ip_address(host(ip_address)::text)
+WHERE ip_address IS NOT NULL AND ip_address_hash IS NULL;
+
+-- Function to clean up expired sessions
+CREATE OR REPLACE FUNCTION public.cleanup_expired_sessions()
+RETURNS void
+LANGUAGE plpgsql
+SECURITY DEFINER
+SET search_path = public
+AS $$
+BEGIN
+  DELETE FROM public.user_sessions
+  WHERE expires_at < now();
+END;
+$$;
+
+-- Allow users to delete their own sessions (for revocation)
+DROP POLICY IF EXISTS "Users can delete their own sessions" ON public.user_sessions;
+CREATE POLICY "Users can delete their own sessions"
+ON public.user_sessions
+FOR DELETE
+TO authenticated
+USING (auth.uid() = user_id);
+
+-- Allow users to view their own sessions
+DROP POLICY IF EXISTS "Users can view their own sessions" ON public.user_sessions;
+CREATE POLICY "Users can view their own sessions"
+ON public.user_sessions
+FOR SELECT
+TO authenticated
+USING (auth.uid() = user_id);
\ No newline at end of file