Email Spoofing

Thunderbird is vulnerable to Email Spoofing. The vulnerability is caused because when processing a PGP/MIME payload that contains digitally signed text, the first paragraph of the text was never shown to the user as the text was interpreted as a MIME message and the first paragraph was always treated as an email header section. A digitally signed text from a different context, such as a signed GIT commit, could be used to spoof an email message.