An excessive memory use issue (CWE-770) exists in Email-MIME, before version 1.954, which can cause denial of service when parsing multipart MIME messages. The patch set (from 2020 and 2024) limits excessive depth and the total number of parts.

The Mime Mail module 6.x-1.x before 6.x-1.1 for Drupal does not properly restrict access to files outside Drupal's publish files directory, which allows remote authenticated users to send arbitrary files as attachments.