CVE-2019-9826

phpBB Denial of Service

7.5 HighFix available

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

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

2.01%Up 1.0 points since Apr 14, 2021

What each source reports

NVD Score used 7.5

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

Record: CVE-2019-9826
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness: CWE-20
Updated: 2026-11-02

CVE List No score

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

Record: CVE-2019-9826
Updated: 2026-11-02

EUVDEUVD-2022-2836 No score

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

Record: EUVD-2022-2836
Updated: 2026-11-03

GitHub AdvisoriesGHSA-6pgr-x867-h7jx 7.5

phpBB Denial of Service

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

Record: GHSA-6pgr-x867-h7jx
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-20
Updated: 2026-11-02

OSV 7.5

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

Record: CVE-2019-9826
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVGHSA-6pgr-x867-h7jx 7.5

phpBB Denial of Service

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

Record: GHSA-6pgr-x867-h7jx
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-20
Updated: 2026-11-02

OSVUBUNTU-CVE-2019-9826 7.5

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

Record: UBUNTU-CVE-2019-9826
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

Affected products

phpbb

Affected packages

Affected packages
Package	Affected	Fixed
`phpbb/phpbb` Packagist	before 3.2.6	3.2.6
`phpbb3` Debian:8	before 3.0.12-5+deb8u3, plus listed versions 3.0.12-53.0.12-5+deb8u13.0.12-5+deb8u2	3.0.12-5+deb8u3
`phpbb/phpbb` Packagist	before 3.2.6, plus listed versions 3.0.123.0.12-RC13.0.12-RC23.0.12-RC33.0.13 Show 45 moreShow less 3.0.13-PL13.0.13-RC13.0.143.0.14-RC13.1.03.1.0-RC13.1.0-RC23.1.0-RC33.1.0-RC43.1.0-RC53.1.0-RC63.1.0-a13.1.0-a23.1.0-a33.1.0-b13.1.0-b23.1.0-b33.1.0-b43.1.13.1.103.1.10-RC13.1.113.1.11-RC13.1.123.1.23.1.2-RC13.1.33.1.3-RC13.1.3-RC23.1.43.1.4-RC13.1.4-RC23.1.53.1.5-RC13.1.63.1.6-RC13.1.73.1.7-RC13.1.7-pl13.1.83.1.8-RC13.1.93.1.9-RC13.2.03.2.0-RC1	3.2.6
`phpbb3` Ubuntu:Pro:14.04:LTS	before 3.0.12-1ubuntu0.1~esm1, plus listed versions 3.0.11-53.0.12-1	3.0.12-1ubuntu0.1~esm1
`phpbb3` Ubuntu:16.04:LTS	All versions, plus listed versions 3.0.14-13.0.14-1ubuntu1	None known

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2019-9826 is a high vulnerability (CVSS 7.5) in Phpbb, published May 2, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.01%, the 81st percentile. Fixed in phpbb/phpbb 3.2.6.

References

This page doesn't list everything

Left out here: 15 versions. The JSON record has them.