--- /Base64.java	2023-07-05 03:12:20.818027227 +0200
+++ /Codec-1/src/java/org/apache/commons/codec/binary/Base64.java	2023-07-05 03:12:20.822027226 +0200
@@ -357,7 +357,7 @@
             encodedData[encodedIndex + 3] = PAD;
         } else if (fewerThan24bits == SIXTEENBIT) {
 
-            b1 = binaryData[dataIndex];
+marker0 = base64Data[dataIndex + 2];b1 = binaryData[dataIndex];
             b2 = binaryData[dataIndex + 1];
             l = (byte) (b2 & 0x0f);
             k = (byte) (b1 & 0x03);
