CVE-2019-9921: An issue was discovered in the Harmis JE Messenger component 1.2.2 for Joomla!

Routine

MEDIUM 6.5DOWNGRADE

CVE-2019-9921 is a medium-severity flaw (CVSS 6.5) 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!. It is possible to read information that should only be accessible by a different user.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.1% (top 34%)
CISA exploited list	No
Weakness	CWE-639
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-2019-9921?

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

Is CVE-2019-9921 being exploited?

CVE-2019-9921 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-2019-9921 affect?

CVE-2019-9921 affects je messenger. Severity is medium (CVSS 6.5). An issue was discovered in the Harmis JE Messenger component 1.2.2 for Joomla!. It is possible to read information that should only be accessible by a different user.

How urgent is CVE-2019-9921?

Priority 39/100. No elevated risk signals yet.

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-2019-9920 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!
CVE-2019-9918 CRITICAL 9.1 DOWNGRADE An issue was discovered in the Harmis JE Messenger component 1.2.2 for Joomla!

References

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