Sympa before 5.4 allows remote attackers to cause a denial of service (daemon crash) via an e-mail message with a malformed value of the Content-Type header and unspecified other headers. NOTE: some of these details are obtained from third party information.
Cross-site scripting (XSS) vulnerability in the create list option in Sympa 4.1.x and earlier allows remote authenticated users to inject arbitrary web script or HTML via the description field.