MailMate before 1.11.3 mishandles a suspicious HTML/MIME structure in a signed/encrypted email.
http://www.openwall.com/lists/oss-security/2019/04/30/4
http://seclists.org/fulldisclosure/2019/Apr/38
http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html
https://updates.mailmate-app.com/release_notes
https://github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdf
https://github.com/RUB-NDS/Johnny-You-Are-Fired
Source: Mitre, NVD
Published: 2019-02-11
Updated: 2026-06-17
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N
Severity: Medium
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Severity: High
EPSS: 0.00507
