If Thunderbird is configured to use STARTTLS for an IMAP server, and the server sends a PREAUTH response, then Thunderbird will continue with an unencrypted connection, causing email data to be sent without protection. This vulnerability affects Thunderbird < 68.9.0.
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-12398.json"
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