--- /Base64.java	2023-07-05 03:12:41.366026639 +0200
+++ /Codec-1/src/java/org/apache/commons/codec/binary/Base64.java	2023-07-05 03:12:41.366026639 +0200
@@ -415,7 +415,7 @@
                     return new byte[0];
                 }
             }
-            decodedData = new byte[lastData - numberQuadruple];
+decodedData = new byte[lastData - encodedDataLength];
         }
 
         for (int i = 0; i < numberQuadruple; i++) {
