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Fixed #10188: prevent newlines in HTTP headers. Thanks, bthomas.

git-svn-id: bcc190cf-cafb-0310-a4f2-bffc1f526a37
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commit 155ab07a5d40f5e0a426423cb8df3868a37a02f8 1 parent a7faf64
@jacobian jacobian authored
5 django/http/
@@ -263,6 +263,9 @@ def parse_cookie(cookie):
cookiedict[key] = c.get(key).value
return cookiedict
+class BadHeaderError(ValueError):
+ pass
class HttpResponse(object):
"""A basic HTTP response, with content and dictionary-accessed headers."""
@@ -301,6 +304,8 @@ def __str__(self):
def _convert_to_ascii(self, *values):
"""Converts all values to ascii strings."""
for value in values:
+ if '\n' in value or '\r' in value:
+ raise BadHeaderError("Header values can't contain newlines (got %r)" % (value))
if isinstance(value, unicode):
yield value.encode('us-ascii')
5 docs/ref/request-response.txt
@@ -445,6 +445,11 @@ To set a header in your response, just treat it like a dictionary::
>>> response = HttpResponse()
>>> response['Pragma'] = 'no-cache'
+.. versionadded:: 1.1
+HTTP headers cannot contain newlines. An attempt to set a header containing a
+newline character (CR or LF) will raise ``BadHeaderError``
Telling the browser to treat the response as a file attachment
11 tests/regressiontests/httpwrappers/
@@ -444,6 +444,17 @@
UnicodeEncodeError: ..., HTTP response headers must be in US-ASCII format
+# Bug #10188: Do not allow newlines in headers (CR or LF)
+>>> r['test\\rstr'] = 'test'
+Traceback (most recent call last):
+BadHeaderError: Header values can't contain newlines (got 'test\\rstr')
+>>> r['test\\nstr'] = 'test'
+Traceback (most recent call last):
+BadHeaderError: Header values can't contain newlines (got 'test\\nstr')
# Regression test for #8278: QueryDict.update(QueryDict)

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