Cross-site Request Forgery (CSRF) The advisory has been revoked - it doesn't affect any version of package phpbb3 (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1604-PHPBB3-1167717
- published19 Aug 2025
- disclosed30 Sept 2019
Introduced: 30 Sep 2019
CVE-2019-16993 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:16.04.
NVD Description
Note: Versions mentioned in the description apply only to the upstream phpbb3 package and not the phpbb3 package as distributed by Ubuntu.
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.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2019-16993
- https://github.com/phpbb/phpbb/commit/18abef716ecf42a35416444f3f84f5459d573789
- https://www.phpbb.com/community/viewtopic.php?t=2352606
- https://www.phpbb.com/support/documents.php?mode=changelog&version=3#v317
- https://lists.debian.org/debian-lts-announce/2019/09/msg00036.html
- https://lists.debian.org/debian-lts-announce/2019/10/msg00006.html