diff --git a/src/java.base/share/classes/java/util/regex/Pattern.java b/src/java.base/share/classes/java/util/regex/Pattern.java
index d52a2b92af9..3c15faf1586 100644
--- a/src/java.base/share/classes/java/util/regex/Pattern.java
+++ b/src/java.base/share/classes/java/util/regex/Pattern.java
@@ -1795,6 +1795,8 @@ loop:   for(int x=0, offset=0; x<nCodePoints; x++, offset+=len) {
             if (patternLength != cursor) {
                 if (peek() == ')') {
                     throw error("Unmatched closing ')'");
+                } else if (cursor == patternLength + 1 && temp[patternLength - 1] == '\\') {
+                    throw error("Unescaped trailing backslash");
                 } else {
                     throw error("Unexpected internal error");
                 }
diff --git a/test/jdk/java/util/regex/RegExTest.java b/test/jdk/java/util/regex/RegExTest.java
index 370b0d9696b..95fa95540ca 100644
--- a/test/jdk/java/util/regex/RegExTest.java
+++ b/test/jdk/java/util/regex/RegExTest.java
@@ -35,7 +35,7 @@
  * 8151481 4867170 7080302 6728861 6995635 6736245 4916384 6328855 6192895
  * 6345469 6988218 6693451 7006761 8140212 8143282 8158482 8176029 8184706
  * 8194667 8197462 8184692 8221431 8224789 8228352 8230829 8236034 8235812
- * 8216332 8214245 8237599 8241055 8247546 8258259 8037397 8269753
+ * 8216332 8214245 8237599 8241055 8247546 8258259 8037397 8269753 8276694
  *
  * @library /test/lib
  * @library /lib/testlibrary/java/lang
@@ -4538,4 +4538,13 @@ public class RegExTest {
         var sep = System.lineSeparator();
         assertTrue(e.getMessage().contains(sep + "\t ^"));
     }
+
+    //This test is for 8276694
+    @Test
+    public static void unescapedBackslash() {
+        String pattern = "\\";
+        var e = expectThrows(PatternSyntaxException.class, () ->
+                Pattern.compile(pattern));
+        assertTrue(e.getMessage().contains("Unescaped trailing backslash"));
+    }
 }