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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.80%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 0.80% probability · 56th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-352
- Affected
- phpbb/phpbb · debian/debian linux
- Source
- cve@mitre.org
EPSS 0.8% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/phpbb/phpbb/commit/18abef716ecf42a35416444f3f84f5459d573789Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/09/msg00036.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/10/msg00006.htmlThird Party Advisory
- https://www.phpbb.com/community/viewtopic.php?t=2352606Vendor Advisory
- https://www.phpbb.com/support/documents.php?mode=changelog&version=3#v317Vendor Advisory
- https://github.com/phpbb/phpbb/commit/18abef716ecf42a35416444f3f84f5459d573789Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/09/msg00036.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/10/msg00006.htmlThird Party Advisory
- https://www.phpbb.com/community/viewtopic.php?t=2352606Vendor Advisory
- https://www.phpbb.com/support/documents.php?mode=changelog&version=3#v317Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.