GNU » Mailman : Security Vulnerabilities, CVEs, Published In 2006 (Denial of service)

Mailman before 2.1.9rc1 allows remote attackers to cause a denial of service via unspecified vectors involving "standards-breaking RFC 2231 formatted headers".

The attachment scrubber (Scrubber.py) in Mailman 2.1.5 and earlier, when using Python's library email module 2.5, allows remote attackers to cause a denial of service (mailing list delivery failure) via a multipart MIME message with a single part that has two blank lines between the first boundary and the end boundary.