Mailman before 2.1.9rc1 allows remote attackers to cause a denial of service via unspecified vectors involving "standards-breaking RFC 2231 formatted headers".
Flaw bug created to hold information about an old flaw we knew something about. For more details see the MITRE CVE description.
Scrubber.py in Mailman 2.1.5-8 does not properly handle UTF8 character encodings in filenames of e-mail attachments, which allows remote attackers to cause a denial of service (application crash).