CVE-2019-9918: An issue was discovered in the Harmis JE Messenger component 1.2.2 for Joomla!

This month

CRITICAL 9.1REMOTEDOWNGRADE

CVE-2019-9918 is a critical-severity flaw (CVSS 9.1) affecting je messenger. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in the Harmis JE Messenger component 1.2.2 for Joomla!. Input does not get validated and queries are not written in a way to prevent SQL injection. Therefore arbitrary SQL-Statements can be executed in the database.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Weakness	CWE-89
Published	2019-03-29
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: harmistechnology

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

Am I affected?

Timeline

2019-03-29 15:29 UTCPublished CVE record published
2026-06-17 02:44 UTCUpdated Record last modified

harmistechnology je messenger DOWNGRADE

Affected: 1.2.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.2.2

1. Check installed version

apt-cache policy je-messenger || rpm -q je-messenger || je-messenger --version

2. No fixed release: DOWNGRADE to a release before 1.2.2 (Debian / Ubuntu)

apt-cache madison je-messenger sudo apt install je-messenger=<VERSION_BEFORE_1.2.2> sudo apt-mark hold je-messenger

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

dnf --showduplicates list je-messenger sudo dnf downgrade je-messenger-<VERSION_BEFORE_1.2.2> sudo dnf versionlock add je-messenger

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-2019-9918?

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

Is CVE-2019-9918 being exploited?

CVE-2019-9918 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-2019-9918 affect?

CVE-2019-9918 affects je messenger. Severity is critical (CVSS 9.1). An issue was discovered in the Harmis JE Messenger component 1.2.2 for Joomla!. Input does not get validated and queries are not written in a way to prevent SQL injection. Therefore arbitrary SQL-Statements can be executed in the database.

How urgent is CVE-2019-9918?

Priority 54/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

Joomla vulnerabilities

Related CVEs

CVE-2019-9922 HIGH 7.5 DOWNGRADE An issue was discovered in the Harmis JE Messenger component 1.2.2 for Joomla!
CVE-2019-9921 MEDIUM 6.5 DOWNGRADE An issue was discovered in the Harmis JE Messenger component 1.2.2 for Joomla!
CVE-2019-9920 HIGH 8.8 DOWNGRADE An issue was discovered in the Harmis JE Messenger component 1.2.2 for Joomla!
CVE-2019-9919 MEDIUM 5.4 DOWNGRADE An issue was discovered in the Harmis JE Messenger component 1.2.2 for Joomla!

References

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