--- a/nashorn/src/jdk/nashorn/internal/runtime/linker/ReflectionCheckLinker.java	Thu Dec 19 21:53:27 2013 +0530
+++ b/nashorn/src/jdk/nashorn/internal/runtime/linker/ReflectionCheckLinker.java	Fri Jan 03 10:09:48 2014 +0530
@@ -75,7 +75,8 @@
             if ((self instanceof Class) && Modifier.isPublic(((Class<?>)self).getModifiers())) {
                 final CallSiteDescriptor desc = requestWithoutContext.getCallSiteDescriptor();
                 if(CallSiteDescriptorFactory.tokenizeOperators(desc).contains("getProp")) {
-                    if ("static".equals(desc.getNameToken(CallSiteDescriptor.NAME_OPERAND))) {
+                    if (desc.getNameTokenCount() > CallSiteDescriptor.NAME_OPERAND &&
+                        "static".equals(desc.getNameToken(CallSiteDescriptor.NAME_OPERAND))) {
                         if (Context.isAccessibleClass((Class<?>)self) && !isReflectionClass((Class<?>)self)) {
                             // If "getProp:static" passes access checks, allow access.
                             return;

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/sandbox/JDK-8031106.js	Fri Jan 03 10:09:48 2014 +0530
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2010, 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8031106: Nashorn: IndexOutOfBoundsException in NashornCallSiteDescriptor.getNameToken()
+ *
+ * @test
+ * @run
+ */
+
+var cl = new java.lang.Object().getClass();
+try {
+   cl["forName"];
+   fail("Should have thrown exception!");
+} catch (e) {
+   if (! (e instanceof java.lang.SecurityException)) {
+       fail("SecurityException expected, got " + e);
+   }
+}