There are 9 open security issues in stretch.
There are 11 open security issues in buster.
You can find information about how to handle these issues in the security team's documentation.
Automatic checks made by the Debian l10n team found some issues with the translations contained in this package. You should check the l10n status report for more information.
Issues can be things such as missing translations, problematic translated strings, outdated PO files, unknown languages, etc.