phpBB Denial of Service

published 2019-05-02 7y ago modified 2026-06-17 4mo ago also GHSA-6pgr-x867-h7jx , EUVD-2022-2836

cvss: 7.5; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 2.0%; EPSS 2.0% chance of exploitation in 30 days, percentile 81%
public exploits: 0; none known

The fulltext search component in phpBB before 3.2.6 allows Denial of Service.

Patch / fix

fixed in 1 distros 1

packagist phpbb/phpbb 3.2.6

phpbb3 Ubuntu Pro 14.04 LTS 3.0.12-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2019-9826

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

Is CVE-2019-9826 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Exploit prediction

2.01% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.0	7.5	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:N/I:N/A:P
GitHub	3.0	7.5	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem	package	affected	fixed in
packagist	phpbb/phpbb	<3.2.6	3.2.6

Classification

Weakness

CWE-20 Improper Input Validation

References

phpbb.com /community/viewtopic.php?f=14&t=2509941
web, vendor-advisory
openwall.com /lists/oss-security/2019/04/29/3
mailing-list, web, mitigation, third-party-advisory
lists.debian.org /debian-lts-announce/2019/05/msg00004.html
mailing-list
nvd.nist.gov /vuln/detail/CVE-2019-9826
advisory
github.com /phpbb/phpbb-app
package

Sources

CVE List CVE-2019-9826
GitHub Advisory GHSA-6pgr-x867-h7jx
NVD CVE-2019-9826

Fencer Intel 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.