diff --git a/Lib/html/parser.py b/Lib/html/parser.py
index 83a58258c7a..c2c7f6bf5da 100644
--- a/Lib/html/parser.py
+++ b/Lib/html/parser.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 dd74aac09b2..e982218dba1 100755
--- a/Lib/test/test_htmlparser.py
+++ b/Lib/test/test_htmlparser.py
@@ -136,6 +136,13 @@ text
     ("data", "\n"),
     ])
 
+    def test_malformatted_charref(self):
+        self._run_check("<p>&#bad;</p>", [
+            ("starttag", "p", []),
+            ("data", "&#bad;"),
+            ("endtag", "p"),
+        ])
+
     def test_unclosed_entityref(self):
         self._run_check("&entityref foo", [
             ("entityref", "entityref"),
diff --git a/Misc/ACKS b/Misc/ACKS
index 838f6f073f1..459e21640df 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -846,3 +846,4 @@ Siebren van der Zee
 Uwe Zessin
 Tarek Ziadé
 Peter Åstrand
+Fredrik Håård
diff --git a/Misc/NEWS b/Misc/NEWS
index 27d16aa42eb..2b5b7919a78 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -54,6 +54,9 @@ C-API
 Library
 -------
 
+- Issue #6662: Fix parsing of malformatted charref (&#bad;), patch written by
+  Fredrik Håård
+
 - Issue #6268: Fix seek() method of codecs.open(), don't read or write the BOM
   twice after seek(0). Fix also reset() method of codecs, UTF-16, UTF-32 and
   StreamWriter classes.