diff --git a/framework/CHANGELOG.md b/framework/CHANGELOG.md
index b92cac9ea0..fdc8310da3 100644
--- a/framework/CHANGELOG.md
+++ b/framework/CHANGELOG.md
@@ -24,6 +24,7 @@ Yii Framework 2 Change Log
 - Bug #19770: Fix `yii\mutex\MysqlMutex` `keyPrefix` expression param binding (kamarton)
 - Enh #19794: Add caching in `yii\web\Request` for `getUserIP()` and `getSecureForwardedHeaderTrustedParts()` (rhertogh)
 - Bug #19795: Fix `yii\web\Response::redirect()` to prevent setting headers with URL containing new line character (bizley)
+- Enh #19804: Remove the unnecessary call to `$this->oldAttributes` in `BaseActiveRecord::getDirtyAttributes()` (thiagotalma)
 
 2.0.47 November 18, 2022
 ------------------------
diff --git a/framework/db/BaseActiveRecord.php b/framework/db/BaseActiveRecord.php
index 67a55d7884..3e0dd316e5 100644
--- a/framework/db/BaseActiveRecord.php
+++ b/framework/db/BaseActiveRecord.php
@@ -639,7 +639,7 @@ abstract class BaseActiveRecord extends Model implements ActiveRecordInterface
             }
         } else {
             foreach ($this->_attributes as $name => $value) {
-                if (isset($names[$name]) && (!array_key_exists($name, $this->_oldAttributes) || $this->isAttributeDirty($name, $value))) {
+                if (isset($names[$name]) && (!array_key_exists($name, $this->_oldAttributes) || $this->isValueDifferent($value, $this->_oldAttributes[$name]))) {
                     $attributes[$name] = $value;
                 }
             }
@@ -1756,18 +1756,18 @@ abstract class BaseActiveRecord extends Model implements ActiveRecordInterface
     }
 
     /**
-     * @param string $attribute
-     * @param mixed $value
+     * @param mixed $newValue
+     * @param mixed $oldValue
      * @return bool
+     * @since 2.0.48
      */
-    private function isAttributeDirty($attribute, $value)
+    private function isValueDifferent($newValue, $oldValue)
     {
-        $old_attribute = $this->oldAttributes[$attribute];
-        if (is_array($value) && is_array($this->oldAttributes[$attribute])) {
-            $value = ArrayHelper::recursiveSort($value);
-            $old_attribute = ArrayHelper::recursiveSort($old_attribute);
+        if (is_array($newValue) && is_array($oldValue)) {
+            $newValue = ArrayHelper::recursiveSort($newValue);
+            $oldValue = ArrayHelper::recursiveSort($oldValue);
         }
 
-        return $value !== $old_attribute;
+        return $newValue !== $oldValue;
     }
 }