Mailman 2.0.x before 2.0.6 allows remote attackers to gain access to list administrative pages when there is an empty site or list password, which is not properly handled during the call to the crypt function during authentication.

The password generation in mailman before 2.1.5 generates only 5 million unique passwords, which makes it easier for remote attackers to guess passwords via a brute force attack.

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).

Unknown vulnerability in the mail command handler in Mailman before 2.0.14 allows remote attackers to cause a denial of service (crash) via malformed e-mail commands.

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.

Cross-site scripting (XSS) vulnerability in the driver script in mailman before 2.1.5 allows remote attackers to inject arbitrary web script or HTML via a URL, which is not properly escaped in the resulting error page.