CVE-2019-16993 json
phpBB Cross-Site Request Forgery (CSRF)
published 2019-09-30 7 y ago modified 2026-06-17 4 mo ago also GHSA-vj3x-vfm4-hvxc , EUVD-2022-5363
- cvss
- 8.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 56%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- packagist phpbb/phpbb 3.1.7-PL1
- phpbb3 Ubuntu Pro 14.04 LTS 3.0.12-1ubuntu0.1~esm1
ubuntu advisories UBUNTU-CVE-2019-16993
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
Exploit prediction
0.80% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
| GitHub | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | phpbb/phpbb | <3.1.7-PL1 |
3.1.7-PL1 |
Classification
- Weakness
-
- CWE-352 Cross-Site Request Forgery
References
-
github.com
/phpbb/phpbb/commit/18abef716ecf42a35416444f3f84f5459d573789
web, patch, third-party-advisory
-
phpbb.com
/community/viewtopic.php?t=2352606
web, vendor-advisory
-
phpbb.com
/support/documents.php?mode=changelog&version=3#v317
web, vendor-advisory
-
lists.debian.org
/debian-lts-announce/2019/09/msg00036.html
mailing-list, web, third-party-advisory
-
lists.debian.org
/debian-lts-announce/2019/10/msg00006.html
mailing-list, web, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2019-16993
advisory
-
github.com
/phpbb/phpbb-app
package
Sources
- CVE List CVE-2019-16993
- GitHub Advisory GHSA-vj3x-vfm4-hvxc
- NVD CVE-2019-16993
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.