GNU Mailman 2.x before 2.1.30 uses the .obj extension for scrubbed application/octet-stream MIME parts. This behavior may contribute to XSS attacks against list-archive visitors, because an HTTP reply from an archive web server may lack a MIME type, and a web browser may perform MIME sniffing, conclude that the MIME type should have been text/html, and execute JavaScript code.
Cross-site scripting vulnerability in Mailman 2.1.26 and earlier allows remote authenticated attackers to inject arbitrary web script or HTML via unspecified vectors.
Cross-site scripting (XSS) vulnerability in the web UI in Mailman before 2.1.26 allows remote attackers to inject arbitrary web script or HTML via a user-options URL.
Directory traversal vulnerability in GNU Mailman before 2.1.20, when not using a static alias, allows remote attackers to execute arbitrary files via a .. (dot dot) in a list name.
Cross-site scripting (XSS) vulnerability in mmsearch/design in the Mailman/htdig integration patch for Mailman allows remote attackers to inject arbitrary web script or HTML via the config parameter.
Multiple cross-site scripting (XSS) vulnerabilities in Cgi/confirm.py in GNU Mailman 2.1.14 and earlier allow remote attackers to inject arbitrary web script or HTML via the (1) full name or (2) username field in a confirmation message.
Multiple cross-site scripting (XSS) vulnerabilities in GNU Mailman before 2.1.14rc1 allow remote authenticated users to inject arbitrary web script or HTML via vectors involving (1) the list information field or (2) the list description field.
Format string vulnerability in Mailman before 2.1.9 allows attackers to execute arbitrary code via unspecified vectors. NOTE: the vendor has disputed this vulnerability, stating that it is "unexploitable.