{"id":"UBUNTU-CVE-2019-16993","details":"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.","modified":"2025-10-24T04:47:54Z","published":"2019-09-30T12:15:00Z","upstream":["CVE-2019-16993"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-16993"},{"type":"REPORT","url":"https://www.phpbb.com/community/viewtopic.php?t=2352606"},{"type":"REPORT","url":"https://lists.debian.org/debian-lts-announce/2019/09/msg00036.html"},{"type":"REPORT","url":"https://www.phpbb.com/support/documents.php?mode=changelog&version=3#v317"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2019-16993"}],"affected":[{"package":{"name":"phpbb3","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/phpbb3@3.0.12-1ubuntu0.1~esm1?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.12-1ubuntu0.1~esm1"}]}],"versions":["3.0.11-5","3.0.12-1"],"ecosystem_specific":{"binaries":[{"binary_name":"phpbb3","binary_version":"3.0.12-1ubuntu0.1~esm1"},{"binary_name":"phpbb3-l10n","binary_version":"3.0.12-1ubuntu0.1~esm1"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-16993.json"}},{"package":{"name":"phpbb3","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/phpbb3@3.0.14-1ubuntu1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.14-1","3.0.14-1ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"phpbb3","binary_version":"3.0.14-1ubuntu1"},{"binary_name":"phpbb3-l10n","binary_version":"3.0.14-1ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-16993.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}