CVE-2018-12373

Source
Severity High
Remote Yes
Type Information disclosure
Description
A security issue has been found in Thunderbird before 52.9, where S/MIME parts hidden with CSS or <plaintext> can leak plaintext when included in a HTML reply/forward.
Group Package Affected Fixed Severity Status Ticket
AVG-728 thunderbird 52.8.0-1 52.9.1-1 Critical Fixed
References
https://www.mozilla.org/en-US/security/advisories/mfsa2018-18/#CVE-2018-12373
https://bugzilla.mozilla.org/show_bug.cgi?id=1464056
https://bugzilla.mozilla.org/show_bug.cgi?id=1464667