--- /URLCodec.java	2023-07-05 02:59:08.474052440 +0200
+++ /Codec-1/src/java/org/apache/commons/codec/net/URLCodec.java	2023-07-05 02:59:08.478052440 +0200
@@ -166,7 +166,7 @@
             } else if (b == '%') {
                 try {
                     int u = Character.digit((char)bytes[++i], 16);
-                    int l = Character.digit((char)bytes[++i], 16);
+int l = Character .forDigit ( i , b )  ;
                     if (u == -1 || l == -1) {
                         throw new DecoderException("Invalid URL encoding");
                     }
