diff --git a/log4j-samples-graalvm/src/main/resources/log4j2-jtl.xml b/log4j-samples-graalvm/src/main/resources/log4j2-jtl.xml
index b3132311..38d60971 100644
--- a/log4j-samples-graalvm/src/main/resources/log4j2-jtl.xml
+++ b/log4j-samples-graalvm/src/main/resources/log4j2-jtl.xml
@@ -26,6 +26,14 @@
   </Appenders>
   <Loggers>
     <Root level="TRACE">
+      <!--
+        Added solely to verify the reachability-metadata regression (issue #3871).
+        This configuration is not intended for production use: relying on ThresholdFilter
+        instead of the more efficient built-in level checks is discouraged.
+
+        See: https://github.com/apache/logging-log4j2/issues/3871
+      -->
+      <ThresholdFilter level="DEBUG"/>
       <AppenderRef ref="FILE"/>
     </Root>
   </Loggers>
diff --git a/log4j-samples-graalvm/src/main/resources/log4j2.xml b/log4j-samples-graalvm/src/main/resources/log4j2.xml
index 03a9c229..1e2be3fd 100644
--- a/log4j-samples-graalvm/src/main/resources/log4j2.xml
+++ b/log4j-samples-graalvm/src/main/resources/log4j2.xml
@@ -26,6 +26,14 @@
   </Appenders>
   <Loggers>
     <Root level="TRACE">
+      <!--
+        Added solely to verify the reachability-metadata regression (issue #3871).
+        This configuration is not intended for production use: relying on ThresholdFilter
+        instead of the more efficient built-in level checks is discouraged.
+
+        See: https://github.com/apache/logging-log4j2/issues/3871
+      -->
+      <ThresholdFilter level="DEBUG"/>
       <AppenderRef ref="FILE"/>
     </Root>
   </Loggers>
diff --git a/log4j-samples-graalvm/src/main/resources/logback.xml b/log4j-samples-graalvm/src/main/resources/logback.xml
index 31bf7de7..057e6131 100644
--- a/log4j-samples-graalvm/src/main/resources/logback.xml
+++ b/log4j-samples-graalvm/src/main/resources/logback.xml
@@ -24,7 +24,7 @@
         </encoder>
     </appender>
 
-    <root level="TRACE">
+    <root level="DEBUG">
         <appender-ref ref="FILE" />
     </root>
 </configuration>
diff --git a/log4j-samples-graalvm/src/main/resources/logging.properties b/log4j-samples-graalvm/src/main/resources/logging.properties
index 3070627f..d9f00d79 100644
--- a/log4j-samples-graalvm/src/main/resources/logging.properties
+++ b/log4j-samples-graalvm/src/main/resources/logging.properties
@@ -16,7 +16,7 @@
 #
 ##
 handlers = java.util.logging.FileHandler
-.level = FINER
+.level = FINE
 java.util.logging.FileHandler.pattern = target/logs/file.log
 java.util.logging.FileHandler.formatter = java.util.logging.SimpleFormatter
 java.util.logging.SimpleFormatter.format = %4$s %3$s - %5$s%n
diff --git a/log4j-samples-graalvm/src/reachability-metadata/log4j-core-jtl-minimal/Log4j2Plugins.json b/log4j-samples-graalvm/src/reachability-metadata/log4j-core-jtl-minimal/Log4j2Plugins.json
index 7812f6fe..97cad07f 100644
--- a/log4j-samples-graalvm/src/reachability-metadata/log4j-core-jtl-minimal/Log4j2Plugins.json
+++ b/log4j-samples-graalvm/src/reachability-metadata/log4j-core-jtl-minimal/Log4j2Plugins.json
@@ -110,6 +110,15 @@
       "builderHierarchy": [
         "org.apache.logging.log4j.layout.template.json.JsonTemplateLayout$EventTemplateAdditionalField$Builder"
       ]
+    },
+    "org.apache.logging.log4j.core.filter.ThresholdFilter": {
+      "pluginNames": [
+        "thresholdfilter"
+      ],
+      "elementName": "filter",
+      "printable": true,
+      "defer": false,
+      "builderHierarchy": []
     }
   },
   "jsontemplateresolverfactory": {
diff --git a/log4j-samples-graalvm/src/reachability-metadata/log4j-core-jtl-minimal/resources/META-INF/native-image/org.apache.logging.log4j/log4j-core/reflect-config.json b/log4j-samples-graalvm/src/reachability-metadata/log4j-core-jtl-minimal/resources/META-INF/native-image/org.apache.logging.log4j/log4j-core/reflect-config.json
index d36bb915..0b7844e0 100644
--- a/log4j-samples-graalvm/src/reachability-metadata/log4j-core-jtl-minimal/resources/META-INF/native-image/org.apache.logging.log4j/log4j-core/reflect-config.json
+++ b/log4j-samples-graalvm/src/reachability-metadata/log4j-core-jtl-minimal/resources/META-INF/native-image/org.apache.logging.log4j/log4j-core/reflect-config.json
@@ -628,5 +628,19 @@
         "name": "propertyArray"
       }
     ]
+  },
+  {
+    "name": "org.apache.logging.log4j.core.filter.ThresholdFilter",
+    "methods": [
+      {
+        "name": "createFilter",
+        "parameterTypes": [
+          "org.apache.logging.log4j.Level",
+          "org.apache.logging.log4j.core.Filter$Result",
+          "org.apache.logging.log4j.core.Filter$Result"
+        ]
+      }
+    ],
+    "fields": []
   }
-]
\ No newline at end of file
+]
diff --git a/log4j-samples-graalvm/src/reachability-metadata/log4j-core-jtl-minimal/resources/META-INF/org/apache/logging/log4j/core/config/plugins/Log4j2Plugins.dat b/log4j-samples-graalvm/src/reachability-metadata/log4j-core-jtl-minimal/resources/META-INF/org/apache/logging/log4j/core/config/plugins/Log4j2Plugins.dat
index ac9efe0d..a1201b77 100644
Binary files a/log4j-samples-graalvm/src/reachability-metadata/log4j-core-jtl-minimal/resources/META-INF/org/apache/logging/log4j/core/config/plugins/Log4j2Plugins.dat and b/log4j-samples-graalvm/src/reachability-metadata/log4j-core-jtl-minimal/resources/META-INF/org/apache/logging/log4j/core/config/plugins/Log4j2Plugins.dat differ
diff --git a/log4j-samples-graalvm/src/reachability-metadata/log4j-core-minimal/Log4j2Plugins.json b/log4j-samples-graalvm/src/reachability-metadata/log4j-core-minimal/Log4j2Plugins.json
index 6da7a868..4fb44b55 100644
--- a/log4j-samples-graalvm/src/reachability-metadata/log4j-core-minimal/Log4j2Plugins.json
+++ b/log4j-samples-graalvm/src/reachability-metadata/log4j-core-minimal/Log4j2Plugins.json
@@ -506,6 +506,15 @@
       "builderHierarchy": [
         "org.apache.logging.log4j.core.layout.PatternLayout$Builder"
       ]
+    },
+    "org.apache.logging.log4j.core.filter.ThresholdFilter": {
+      "pluginNames": [
+        "thresholdfilter"
+      ],
+      "elementName": "filter",
+      "printable": true,
+      "defer": false,
+      "builderHierarchy": []
     }
   },
   "typeconverter": {
diff --git a/log4j-samples-graalvm/src/reachability-metadata/log4j-core-minimal/resources/META-INF/native-image/org.apache.logging.log4j/log4j-core/reflect-config.json b/log4j-samples-graalvm/src/reachability-metadata/log4j-core-minimal/resources/META-INF/native-image/org.apache.logging.log4j/log4j-core/reflect-config.json
index e9991af6..4b2c5187 100644
--- a/log4j-samples-graalvm/src/reachability-metadata/log4j-core-minimal/resources/META-INF/native-image/org.apache.logging.log4j/log4j-core/reflect-config.json
+++ b/log4j-samples-graalvm/src/reachability-metadata/log4j-core-minimal/resources/META-INF/native-image/org.apache.logging.log4j/log4j-core/reflect-config.json
@@ -1316,5 +1316,19 @@
       }
     ],
     "fields": []
+  },
+  {
+    "name": "org.apache.logging.log4j.core.filter.ThresholdFilter",
+    "methods": [
+      {
+        "name": "createFilter",
+        "parameterTypes": [
+          "org.apache.logging.log4j.Level",
+          "org.apache.logging.log4j.core.Filter$Result",
+          "org.apache.logging.log4j.core.Filter$Result"
+        ]
+      }
+    ],
+    "fields": []
   }
-]
\ No newline at end of file
+]
diff --git a/log4j-samples-graalvm/src/reachability-metadata/log4j-core-minimal/resources/META-INF/org/apache/logging/log4j/core/config/plugins/Log4j2Plugins.dat b/log4j-samples-graalvm/src/reachability-metadata/log4j-core-minimal/resources/META-INF/org/apache/logging/log4j/core/config/plugins/Log4j2Plugins.dat
index c81c04bc..6d4a979a 100644
Binary files a/log4j-samples-graalvm/src/reachability-metadata/log4j-core-minimal/resources/META-INF/org/apache/logging/log4j/core/config/plugins/Log4j2Plugins.dat and b/log4j-samples-graalvm/src/reachability-metadata/log4j-core-minimal/resources/META-INF/org/apache/logging/log4j/core/config/plugins/Log4j2Plugins.dat differ
diff --git a/log4j-samples-graalvm/src/test/java/org/apache/logging/log4j/samples/graalvm/JsonTemplateLayoutIT.java b/log4j-samples-graalvm/src/test/java/org/apache/logging/log4j/samples/graalvm/JsonTemplateLayoutIT.java
index 48a05c18..ba160a71 100644
--- a/log4j-samples-graalvm/src/test/java/org/apache/logging/log4j/samples/graalvm/JsonTemplateLayoutIT.java
+++ b/log4j-samples-graalvm/src/test/java/org/apache/logging/log4j/samples/graalvm/JsonTemplateLayoutIT.java
@@ -33,7 +33,7 @@
  */
 class JsonTemplateLayoutIT {
 
-    static final String[] STANDARD_LEVELS = {"ERROR", "WARN", "INFO", "DEBUG", "TRACE"};
+    static final String[] STANDARD_LEVELS = {"ERROR", "WARN", "INFO", "DEBUG"};
 
     @Test
     void verifyStdOut() {
diff --git a/log4j-samples-graalvm/src/test/java/org/apache/logging/log4j/samples/graalvm/StandardIT.java b/log4j-samples-graalvm/src/test/java/org/apache/logging/log4j/samples/graalvm/StandardIT.java
index ccb57442..088e4ea2 100644
--- a/log4j-samples-graalvm/src/test/java/org/apache/logging/log4j/samples/graalvm/StandardIT.java
+++ b/log4j-samples-graalvm/src/test/java/org/apache/logging/log4j/samples/graalvm/StandardIT.java
@@ -32,7 +32,7 @@
  */
 class StandardIT {
 
-    static final String[] STANDARD_LEVELS = {"ERROR", "WARN", "INFO", "DEBUG", "TRACE"};
+    static final String[] STANDARD_LEVELS = {"ERROR", "WARN", "INFO", "DEBUG"};
 
     @Test
     void verifyStdOut() {