The Simplenews module 6.x-1.x before 6.x-1.4, 6.x-2.x before 6.x-2.0-alpha4, and 7.x-1.x before 7.x-1.0-rc1 for Drupal reveals the email addresses of new mailing list subscribers when confirmation is required, which allows remote attackers to obtain sensitive information via the confirmation page.

Cross-site scripting (XSS) vulnerability in the API in the Simplenews module 6.x-1.x before 6.x-1.5 and 7.x-1.x before 7.x-1.1 for Drupal allows remote attackers to inject arbitrary web script or HTML via an email address.

Open redirect vulnerability in Simplenews Statistics 6.x before 6.x-2.0, a module for Drupal, allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via unspecified vectors.

Cross-site scripting (XSS) vulnerability in Simplenews Statistics 6.x before 6.x-2.0, a module for Drupal, allows remote attackers to inject arbitrary web script or HTML via unspecified vector.

Multiple cross-site request forgery (CSRF) vulnerabilities in Simplenews Statistics 6.x before 6.x-2.0, a module for Drupal, allow remote attackers to hijack the authentication of arbitrary users via unknown vectors.

Cross-site scripting (XSS) vulnerability in the Simplenews module 5.x before 5.x-1.5 and 6.x before 6.x-1.0-beta4, a module for Drupal, allows remote authenticated users, with "administer taxonomy" permissions, to inject arbitrary web script or HTML via a Newsletter category field.