CVE-2019-16993
In phpBB before 3.1.7-PL1, includes/acp/acp_bbcodes.php has improper verification of a CSRF token on the BBCode page in the Administration Control Panel. An actual CSRF attack is possible if an attacker also manages to retrieve the session id of a reauthenticated administrator prior to targeting them.
Date published : 2019-09-30
https://github.com/phpbb/phpbb/commit/18abef716ecf42a35416444f3f84f5459d573789