diff --git a/system/BaseModel.php b/system/BaseModel.php
index cd8b475196d5..5921f2ced7fd 100644
--- a/system/BaseModel.php
+++ b/system/BaseModel.php
@@ -853,7 +853,7 @@ public function insertBatch(?array $set = null, ?bool $escape = null, int $batch
 
                 // Must be called first so we don't
                 // strip out created_at values.
-                $row = $this->doProtectFields($row);
+                $row = $this->doProtectFieldsForInsert($row);
 
                 // Set created_at and updated_at with same time
                 $date = $this->setDate();
@@ -1228,10 +1228,10 @@ public function protect(bool $protect = true)
     }
 
     /**
-     * Ensures that only the fields that are allowed to be updated
-     * are in the data array.
+     * Ensures that only the fields that are allowed to be updated are
+     * in the data array.
      *
-     * Used by insert() and update() to protect against mass assignment
+     * Used by update() and updateBatch() to protect against mass assignment
      * vulnerabilities.
      *
      * @param array $data Data
@@ -1257,6 +1257,22 @@ protected function doProtectFields(array $data): array
         return $data;
     }
 
+    /**
+     * Ensures that only the fields that are allowed to be inserted are in
+     * the data array.
+     *
+     * Used by insert() and insertBatch() to protect against mass assignment
+     * vulnerabilities.
+     *
+     * @param array $data Data
+     *
+     * @throws DataException
+     */
+    protected function doProtectFieldsForInsert(array $data): array
+    {
+        return $this->doProtectFields($data);
+    }
+
     /**
      * Sets the date or current date if null value is passed.
      *
diff --git a/system/Model.php b/system/Model.php
index cc901f831de1..aedc51200445 100644
--- a/system/Model.php
+++ b/system/Model.php
@@ -734,6 +734,41 @@ public function insert($data = null, bool $returnID = true)
         return parent::insert($data, $returnID);
     }
 
+    /**
+     * Ensures that only the fields that are allowed to be inserted are in
+     * the data array.
+     *
+     * Used by insert() and insertBatch() to protect against mass assignment
+     * vulnerabilities.
+     *
+     * @param array $data Data
+     *
+     * @throws DataException
+     */
+    protected function doProtectFieldsForInsert(array $data): array
+    {
+        if (! $this->protectFields) {
+            return $data;
+        }
+
+        if (empty($this->allowedFields)) {
+            throw DataException::forInvalidAllowedFields(static::class);
+        }
+
+        foreach (array_keys($data) as $key) {
+            // Do not remove the non-auto-incrementing primary key data.
+            if ($this->useAutoIncrement === false && $key === $this->primaryKey) {
+                continue;
+            }
+
+            if (! in_array($key, $this->allowedFields, true)) {
+                unset($data[$key]);
+            }
+        }
+
+        return $data;
+    }
+
     /**
      * Updates a single record in the database. If an object is provided,
      * it will attempt to convert it into an array.
diff --git a/tests/system/Models/InsertModelTest.php b/tests/system/Models/InsertModelTest.php
index 141eebdd6307..f538b417c935 100644
--- a/tests/system/Models/InsertModelTest.php
+++ b/tests/system/Models/InsertModelTest.php
@@ -65,6 +65,26 @@ public function testInsertBatchSuccess(): void
         $this->seeInDatabase('job', ['name' => 'Cab Driver']);
     }
 
+    public function testInsertBatchUseAutoIncrementSetToFalse(): void
+    {
+        $insertData = [
+            [
+                'key'   => 'key1',
+                'value' => 'value1',
+            ],
+            [
+                'key'   => 'key2',
+                'value' => 'value2',
+            ],
+        ];
+
+        $this->createModel(WithoutAutoIncrementModel::class);
+        $this->model->insertBatch($insertData);
+
+        $this->seeInDatabase('without_auto_increment', ['key' => 'key1']);
+        $this->seeInDatabase('without_auto_increment', ['key' => 'key2']);
+    }
+
     public function testInsertBatchValidationFail(): void
     {
         $jobData = [