diff --git a/apps/backend/src/config/migrations.ts b/apps/backend/src/config/migrations.ts
index c65ce84e..3b5c0eff 100644
--- a/apps/backend/src/config/migrations.ts
+++ b/apps/backend/src/config/migrations.ts
@@ -33,6 +33,7 @@ import { UpdateOrderEntity1769990652833 } from '../migrations/1769990652833-Upda
 import { DonationItemFoodTypeNotNull1771524930613 } from '../migrations/1771524930613-DonationItemFoodTypeNotNull';
 import { MoveRequestFieldsToOrders1770571145350 } from '../migrations/1770571145350-MoveRequestFieldsToOrders';
 import { RenameDonationMatchingStatus1771260403657 } from '../migrations/1771260403657-RenameDonationMatchingStatus';
+import { FixTrackingLinks1773041840374 } from '../migrations/1773041840374-FixTrackingLinks';
 import { CleanupRequestsAndAllocations1771821377918 } from '../migrations/1771821377918-CleanupRequestsAndAllocations';
 
 const schemaMigrations = [
@@ -71,6 +72,7 @@ const schemaMigrations = [
   DonationItemFoodTypeNotNull1771524930613,
   MoveRequestFieldsToOrders1770571145350,
   RenameDonationMatchingStatus1771260403657,
+  FixTrackingLinks1773041840374,
   CleanupRequestsAndAllocations1771821377918,
 ];
 
diff --git a/apps/backend/src/foodRequests/request.service.spec.ts b/apps/backend/src/foodRequests/request.service.spec.ts
index d404d62a..99432e50 100644
--- a/apps/backend/src/foodRequests/request.service.spec.ts
+++ b/apps/backend/src/foodRequests/request.service.spec.ts
@@ -120,7 +120,7 @@ describe('RequestsService', () => {
         orderId: 1,
         status: OrderStatus.DELIVERED,
         foodManufacturerName: 'FoodCorp Industries',
-        trackingLink: 'www.samplelink/samplelink',
+        trackingLink: 'https://www.samplelink.com/samplelink',
         items: expectedItems,
       });
     });
diff --git a/apps/backend/src/migrations/1773041840374-FixTrackingLinks.ts b/apps/backend/src/migrations/1773041840374-FixTrackingLinks.ts
new file mode 100644
index 00000000..8449da3e
--- /dev/null
+++ b/apps/backend/src/migrations/1773041840374-FixTrackingLinks.ts
@@ -0,0 +1,19 @@
+import { MigrationInterface, QueryRunner } from 'typeorm';
+
+export class FixTrackingLinks1773041840374 implements MigrationInterface {
+  public async up(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`
+            UPDATE orders
+            SET tracking_link = 'https://www.samplelink.com/samplelink'
+            WHERE tracking_link = 'www.samplelink/samplelink';
+            `);
+  }
+
+  public async down(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`
+            UPDATE orders
+            SET tracking_link = 'www.samplelink/samplelink'
+            WHERE tracking_link = 'https://www.samplelink.com/samplelink';
+            `);
+  }
+}
diff --git a/apps/backend/src/orders/dtos/tracking-cost.dto.ts b/apps/backend/src/orders/dtos/tracking-cost.dto.ts
index 1c29ce6e..27327384 100644
--- a/apps/backend/src/orders/dtos/tracking-cost.dto.ts
+++ b/apps/backend/src/orders/dtos/tracking-cost.dto.ts
@@ -1,7 +1,12 @@
 import { IsUrl, IsNumber, Min, IsOptional } from 'class-validator';
 
 export class TrackingCostDto {
-  @IsUrl({}, { message: 'Tracking link must be a valid URL' })
+  @IsUrl(
+    {
+      protocols: ['http', 'https'],
+    },
+    { message: 'Tracking link must be a valid HTTP/HTTPS URL' },
+  )
   @IsOptional()
   trackingLink?: string;
 
diff --git a/apps/backend/src/orders/order.service.spec.ts b/apps/backend/src/orders/order.service.spec.ts
index b97f4827..78dc5a7b 100644
--- a/apps/backend/src/orders/order.service.spec.ts
+++ b/apps/backend/src/orders/order.service.spec.ts
@@ -156,7 +156,7 @@ describe('OrdersService', () => {
         orderId: 1,
         status: OrderStatus.DELIVERED,
         foodManufacturerName: 'FoodCorp Industries',
-        trackingLink: 'www.samplelink/samplelink',
+        trackingLink: 'https://www.samplelink.com/samplelink',
         items: [
           {
             id: 1,
@@ -358,7 +358,7 @@ describe('OrdersService', () => {
   describe('updateTrackingCostInfo', () => {
     it('throws when order is non-existent', async () => {
       const trackingCostDto: TrackingCostDto = {
-        trackingLink: 'test',
+        trackingLink: 'www.test.com',
         shippingCost: 5.99,
       };
 
@@ -375,7 +375,7 @@ describe('OrdersService', () => {
       );
     });
 
-    it('updates tracking link for shipped order', async () => {
+    it('sanitizes and updates tracking link for shipped order', async () => {
       const trackingCostDto: TrackingCostDto = {
         trackingLink: 'samplelink.com',
       };
@@ -384,7 +384,7 @@ describe('OrdersService', () => {
 
       const order = await service.findOne(3);
       expect(order.trackingLink).toBeDefined();
-      expect(order.trackingLink).toEqual('samplelink.com');
+      expect(order.trackingLink).toEqual('https://samplelink.com/');
     });
 
     it('updates shipping cost for shipped order', async () => {
@@ -399,7 +399,7 @@ describe('OrdersService', () => {
       expect(order.shippingCost).toEqual('12.99');
     });
 
-    it('updates both shipping cost and tracking link', async () => {
+    it('updates both shipping cost and tracking link (sanitized)', async () => {
       const trackingCostDto: TrackingCostDto = {
         trackingLink: 'testtracking.com',
         shippingCost: 7.5,
@@ -408,7 +408,7 @@ describe('OrdersService', () => {
       await service.updateTrackingCostInfo(3, trackingCostDto);
 
       const order = await service.findOne(3);
-      expect(order.trackingLink).toEqual('testtracking.com');
+      expect(order.trackingLink).toEqual('https://testtracking.com/');
       expect(order.shippingCost).toEqual('7.50');
     });
 
@@ -452,6 +452,21 @@ describe('OrdersService', () => {
       );
     });
 
+    it('throws when tracking link is invalid', async () => {
+      const trackingCostDto: TrackingCostDto = {
+        trackingLink: `javascript:alert("you've been hacked!")`,
+        shippingCost: 7.5,
+      };
+
+      await expect(
+        service.updateTrackingCostInfo(3, trackingCostDto),
+      ).rejects.toThrow(
+        new BadRequestException(
+          'Invalid tracking link. Only valid HTTP/HTTPS URLs are accepted.',
+        ),
+      );
+    });
+
     it('sets status to shipped when both fields provided and previous status pending', async () => {
       const trackingCostDto: TrackingCostDto = {
         trackingLink: 'testtracking.com',
diff --git a/apps/backend/src/orders/order.service.ts b/apps/backend/src/orders/order.service.ts
index 329576c7..8c381499 100644
--- a/apps/backend/src/orders/order.service.ts
+++ b/apps/backend/src/orders/order.service.ts
@@ -8,7 +8,7 @@ import { Repository, In } from 'typeorm';
 import { Order } from './order.entity';
 import { Pantry } from '../pantries/pantries.entity';
 import { FoodManufacturer } from '../foodManufacturers/manufacturers.entity';
-import { validateId } from '../utils/validation.utils';
+import { sanitizeUrl, validateId } from '../utils/validation.utils';
 import { OrderStatus } from './types';
 import { TrackingCostDto } from './dtos/tracking-cost.dto';
 import { OrderDetailsDto } from './dtos/order-details.dto';
@@ -283,6 +283,16 @@ export class OrdersService {
       );
     }
 
+    if (dto.trackingLink) {
+      const sanitized = sanitizeUrl(dto.trackingLink);
+      if (!sanitized) {
+        throw new BadRequestException(
+          'Invalid tracking link. Only valid HTTP/HTTPS URLs are accepted.',
+        );
+      }
+      dto.trackingLink = sanitized;
+    }
+
     const order = await this.repo.findOneBy({ orderId });
     if (!order) {
       throw new NotFoundException(`Order ${orderId} not found`);
diff --git a/apps/backend/src/utils/validation.utils.spec.ts b/apps/backend/src/utils/validation.utils.spec.ts
index 01c1f790..2d2905d0 100644
--- a/apps/backend/src/utils/validation.utils.spec.ts
+++ b/apps/backend/src/utils/validation.utils.spec.ts
@@ -2,7 +2,7 @@ import {
   BadRequestException,
   InternalServerErrorException,
 } from '@nestjs/common';
-import { validateEnv, validateId } from './validation.utils';
+import { sanitizeUrl, validateEnv, validateId } from './validation.utils';
 
 describe('validateId', () => {
   it('should not throw an error for a valid ID', () => {
@@ -39,3 +39,38 @@ describe('validateEnv', () => {
     );
   });
 });
+
+describe('sanitizeUrl', () => {
+  it('should return null for malicious protocols', () => {
+    const maliciousProtocols = ['javascript:', 'data:', 'file:', 'vbscript:'];
+
+    for (const protocol of maliciousProtocols) {
+      expect(sanitizeUrl(protocol + 'test')).toBeNull();
+    }
+  });
+
+  it('should return null for empty or invalid URLs', () => {
+    expect(sanitizeUrl('')).toBeNull();
+    expect(sanitizeUrl('https://')).toBeNull();
+    expect(sanitizeUrl('https://foo')).toBeNull();
+  });
+
+  it('should accept valid http/https URLs', () => {
+    const validHttpUrl = 'http://www.tracking.com/test';
+    const validHttpsUrl = 'https://www.tracking.com/test';
+    expect(sanitizeUrl(validHttpUrl)).toBe(validHttpUrl);
+    expect(sanitizeUrl(validHttpsUrl)).toBe(validHttpsUrl);
+  });
+
+  it('adds https:// to URL without protocol', () => {
+    expect(sanitizeUrl('www.tracking.com/test')).toBe(
+      'https://www.tracking.com/test',
+    );
+  });
+
+  it('trims whitespace from URL', () => {
+    expect(sanitizeUrl('  https://www.tracking.com/test   ')).toBe(
+      'https://www.tracking.com/test',
+    );
+  });
+});
diff --git a/apps/backend/src/utils/validation.utils.ts b/apps/backend/src/utils/validation.utils.ts
index be7f141a..700f757e 100644
--- a/apps/backend/src/utils/validation.utils.ts
+++ b/apps/backend/src/utils/validation.utils.ts
@@ -18,3 +18,24 @@ export function validateEnv(name: string): string {
 
   return v;
 }
+
+export function sanitizeUrl(url: string): string | null {
+  try {
+    const trimmed = url.trim();
+    if (!trimmed) return null;
+
+    let fullUrl = trimmed;
+    if (!/^https?:\/\//i.test(trimmed)) {
+      fullUrl = 'https://' + trimmed;
+    }
+
+    const urlObj = new URL(fullUrl);
+
+    if (urlObj.protocol !== 'http:' && urlObj.protocol !== 'https:')
+      return null;
+    if (!urlObj.hostname || !urlObj.hostname.includes('.')) return null;
+    return urlObj.href;
+  } catch {
+    return null;
+  }
+}