diff --git a/common/data/src/main/java/org/thingsboard/server/common/data/alarm/AlarmCreateOrUpdateActiveRequest.java b/common/data/src/main/java/org/thingsboard/server/common/data/alarm/AlarmCreateOrUpdateActiveRequest.java
index c456323120..65e943c574 100644
--- a/common/data/src/main/java/org/thingsboard/server/common/data/alarm/AlarmCreateOrUpdateActiveRequest.java
+++ b/common/data/src/main/java/org/thingsboard/server/common/data/alarm/AlarmCreateOrUpdateActiveRequest.java
@@ -39,6 +39,7 @@ public class AlarmCreateOrUpdateActiveRequest implements AlarmModificationReques
     private TenantId tenantId;
     @Schema(description = "JSON object with Customer Id", accessMode = Schema.AccessMode.READ_ONLY)
     private CustomerId customerId;
+    @NoXss
     @NotNull
     @Schema(requiredMode = Schema.RequiredMode.REQUIRED, description = "representing type of the Alarm", example = "High Temperature Alarm")
     @Length(fieldName = "type")
diff --git a/dao/src/test/java/org/thingsboard/server/dao/service/AlarmServiceTest.java b/dao/src/test/java/org/thingsboard/server/dao/service/AlarmServiceTest.java
index e1093e4f46..2329111e22 100644
--- a/dao/src/test/java/org/thingsboard/server/dao/service/AlarmServiceTest.java
+++ b/dao/src/test/java/org/thingsboard/server/dao/service/AlarmServiceTest.java
@@ -18,6 +18,7 @@ package org.thingsboard.server.dao.service;
 import com.datastax.oss.driver.api.core.uuid.Uuids;
 import org.junit.Assert;
 import org.junit.Test;
+import org.junit.jupiter.api.Assertions;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.thingsboard.common.util.JacksonUtil;
 import org.thingsboard.server.common.data.Customer;
@@ -57,6 +58,7 @@ import org.thingsboard.server.dao.alarm.AlarmService;
 import org.thingsboard.server.dao.asset.AssetService;
 import org.thingsboard.server.dao.customer.CustomerService;
 import org.thingsboard.server.dao.device.DeviceService;
+import org.thingsboard.server.dao.exception.DataValidationException;
 import org.thingsboard.server.dao.relation.RelationService;
 import org.thingsboard.server.dao.user.UserService;
 
@@ -64,6 +66,8 @@ import java.util.Collections;
 import java.util.List;
 import java.util.concurrent.ExecutionException;
 
+import static org.assertj.core.api.Assertions.assertThat;
+
 @DaoSqlTest
 public class AlarmServiceTest extends AbstractServiceTest {
 
@@ -987,4 +991,25 @@ public class AlarmServiceTest extends AbstractServiceTest {
         Assert.assertEquals(1, alarmsCount);
     }
 
+    @Test
+    public void testShouldFailToCreateAlarmWithBadType() {
+        AssetId originatorId = new AssetId(Uuids.timeBased());
+
+        long ts = System.currentTimeMillis();
+        AlarmCreateOrUpdateActiveRequest request = AlarmCreateOrUpdateActiveRequest.builder()
+                .tenantId(tenantId)
+                .originator(originatorId)
+                .type("<img src=1 onerror=alert()>")
+                .severity(AlarmSeverity.CRITICAL)
+                .startTs(ts).build();
+
+        Assertions.assertThrows(DataValidationException.class, () -> {
+            alarmService.createAlarm(request);
+        });
+
+        request.setType(TEST_ALARM);
+        AlarmApiCallResult result = alarmService.createAlarm(request);
+        assertThat(result.getAlarm().getId()).isNotNull();
+    }
+
 }