This update for mailman fixes the following issues:
Security issue fixed:
- CVE-2020-12108: Fixed a content injection bug (bsc#1171363). - CVE-2020-12137: Fixed a XSS vulnerability caused by MIME type confusion (bsc#1170558).
Non-security issue fixed:
- Fixed rights and ownership on /var/lib/mailman/archives (bsc#1167068). - Don't default to invalid hosts for DEFAULT_EMAIL_HOST (bsc#682920).