python
diff --git a/‎Lib/cgi.py
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+6-2Lines changed: 6 additions & 2 deletions b/‎Lib/cgi.py
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+6-2Lines changed: 6 additions & 2 deletions
diff --git a/‎Lib/test/test_cgi.py
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+14Lines changed: 14 additions & 0 deletions b/‎Lib/test/test_cgi.py
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+14Lines changed: 14 additions & 0 deletions
diff --git a/‎Misc/NEWS.d/next/Library/2018-07-29-12-14-54.bpo-34226.BE7zbu.rst
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+1Lines changed: 1 addition & 0 deletions b/‎Misc/NEWS.d/next/Library/2018-07-29-12-14-54.bpo-34226.BE7zbu.rst
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@@ -200,7 +200,10 @@ def parse_multipart(fp, pdict, encoding="utf-8", errors="replace"):
     ctype = "multipart/form-data; boundary={}".format(boundary)
     headers = Message()
     headers.set_type(ctype)
-    headers['Content-Length'] = pdict['CONTENT-LENGTH']
+    try:
+        headers['Content-Length'] = pdict['CONTENT-LENGTH']
+    except KeyError:
+        pass
     fs = FieldStorage(fp, headers=headers, encoding=encoding, errors=errors,
         environ={'REQUEST_METHOD': 'POST'})
     return {k: fs.getlist(k) for k in fs}
@@ -736,7 +739,8 @@ def read_lines_to_outerboundary(self):
         last_line_lfend = True
         _read = 0
         while 1:
-            if self.limit is not None and _read >= self.limit:
+
+            if self.limit is not None and 0 <= self.limit <= _read:
                 break
             line = self.fp.readline(1<<16) # bytes
             self.bytes_read += len(line)
 
@@ -128,6 +128,20 @@ def test_parse_multipart(self):
                     'file': [b'Testing 123.\n'], 'title': ['']}
         self.assertEqual(result, expected)
 
+    def test_parse_multipart_without_content_length(self):
+        POSTDATA = '''--JfISa01
+Content-Disposition: form-data; name="submit-name"
+
+just a string
+
+--JfISa01--
+'''
+        fp = BytesIO(POSTDATA.encode('latin1'))
+        env = {'boundary': 'JfISa01'.encode('latin1')}
+        result = cgi.parse_multipart(fp, env)
+        expected = {'submit-name': ['just a string\n']}
+        self.assertEqual(result, expected)
+
     def test_parse_multipart_invalid_encoding(self):
         BOUNDARY = "JfISa01"
         POSTDATA = """--JfISa01
 
@@ -0,0 +1 @@
+Fix `cgi.parse_multipart` without content_length. Patch by Roger Duran
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	+Fix `cgi.parse_multipart` without content_length. Patch by Roger Duran