diff --git a/Lib/HTMLParser.py b/Lib/HTMLParser.py
index 2cbc2ecbc73..7cee47a7c5d 100644
--- a/Lib/HTMLParser.py
+++ b/Lib/HTMLParser.py
@@ -175,6 +175,9 @@ class HTMLParser(markupbase.ParserBase):
                     i = self.updatepos(i, k)
                     continue
                 else:
+                    if ";" in rawdata[i:]: #bail by consuming &#
+                        self.handle_data(rawdata[0:2])
+                        i = self.updatepos(i, 2)
                     break
             elif startswith('&', i):
                 match = entityref.match(rawdata, i)
diff --git a/Lib/test/test_htmlparser.py b/Lib/test/test_htmlparser.py
index 810af6c8cbc..c45cf00ecea 100755
--- a/Lib/test/test_htmlparser.py
+++ b/Lib/test/test_htmlparser.py
@@ -313,6 +313,13 @@ DOCTYPE html [
                 ("starttag", "html", [("foo", u"\u20AC&aa&unsupported;")])
                 ])
 
+    def test_malformatted_charref(self):
+        self._run_check("<p>&#bad;</p>", [
+            ("starttag", "p", []),
+            ("data", "&#bad;"),
+            ("endtag", "p"),
+        ])
+
 
 def test_main():
     test_support.run_unittest(HTMLParserTestCase)
diff --git a/Misc/ACKS b/Misc/ACKS
index efaa20ffe34..94a22a860ec 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -191,7 +191,7 @@ Luke Dunstan
 Andy Dustman
 Gary Duzan
 Eugene Dvurechenski
-Josip Dzolonga 
+Josip Dzolonga
 Maxim Dzumanenko
 Walter Dörwald
 Hans Eckardt
@@ -812,3 +812,4 @@ Uwe Zessin
 Tarek ZiadŽ
 Peter Åstrand
 Jesse Noller
+Fredrik Håård
diff --git a/Misc/NEWS b/Misc/NEWS
index badd19af6e9..eba95a01f28 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -55,6 +55,9 @@ C-API
 Library
 -------
 
+- Issue #6662: Fix parsing of malformatted charref (&#bad;), patch written by
+  Fredrik Håård
+
 - Issue #1628205: Socket file objects returned by socket.socket.makefile() now
   properly handles EINTR within the read, readline, write & flush methods.
   The socket.sendall() method now properly handles interrupted system calls.