In WordPress before 4.7.3 (wp-admin/plugins.php), unintended files can be deleted by administrators using the plugin deletion functionality.
www.debian.org/security/2017/dsa-3815
www.securityfocus.com/bid/96598
www.securitytracker.com/id/1037959
codex.wordpress.org/Version_4.7.3
github.com/WordPress/WordPress/commit/4d80f8b3e1b00a3edcee0774dc9c2f4c78f9e663
wordpress.org/news/2017/03/wordpress-4-7-3-security-and-maintenance-release/
wpvulndb.com/vulnerabilities/8767