CVE-2019-16993: Debian Linux

High severity, CVSS 8.8. EPSS: 0.8% chance of exploitation in the next 30 days.

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.

Affected products

  • Debian Debian Linux: version 8.0 only
  • Phpbb Phpbb: up to and including 3.1.7

Published 2019-09-30. Last modified 2026-06-17.