CVE-2019-9566: FlarumChina v0.1.0-beta.7C has SQL injection via a /?q= request.

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2019-9566 is a critical-severity flaw (CVSS 9.8) affecting flarumchina. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

FlarumChina v0.1.0-beta.7C has SQL injection via a /?q= request.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.5% (top 26%)
CISA exploited list	No
Weakness	CWE-89
Published	2019-03-04
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: flarumchina

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-03-04 18:29 UTCPublished CVE record published
2026-06-17 02:43 UTCUpdated Record last modified

flarumchina flarumchina DOWNGRADE

Affected: 0.1.0 beta.7c

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.1.0

1. Check installed version

apt-cache policy flarumchina || rpm -q flarumchina || flarumchina --version

2. No fixed release: DOWNGRADE to a release before 0.1.0 (Debian / Ubuntu)

apt-cache madison flarumchina sudo apt install flarumchina=<VERSION_BEFORE_0.1.0> sudo apt-mark hold flarumchina

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list flarumchina sudo dnf downgrade flarumchina-<VERSION_BEFORE_0.1.0> sudo dnf versionlock add flarumchina

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2019-9566?

flarumchina: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2019-9566 being exploited?

CVE-2019-9566 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2019-9566 affect?

CVE-2019-9566 affects flarumchina. Severity is critical (CVSS 9.8). FlarumChina v0.1.0-beta.7C has SQL injection via a /?q= request.

How urgent is CVE-2019-9566?

Priority 63/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

References

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