CVE-2019-12150: Karamasoft UltimateEditor 1 does not ensure that an uploaded file is an image or document (neither file types

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2019-12150 is a critical-severity flaw (CVSS 9.8) affecting ultimateeditor. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Karamasoft UltimateEditor 1 does not ensure that an uploaded file is an image or document (neither file types nor extensions are restricted). The attacker must use the Attach icon to perform an upload. An uploaded file is accessible under the UltimateEditorInclude/UserFiles/ URI.

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	1.7% (top 22%)
CISA exploited list	No
Weakness	CWE-434
Published	2019-05-24
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: karamasoft

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

Am I affected?

Timeline

2019-05-24 16:29 UTCPublished CVE record published
2026-06-17 02:14 UTCUpdated Record last modified

karamasoft ultimateeditor DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison ultimateeditor sudo apt install ultimateeditor=<VERSION_BEFORE_1.0> sudo apt-mark hold ultimateeditor

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

dnf --showduplicates list ultimateeditor sudo dnf downgrade ultimateeditor-<VERSION_BEFORE_1.0> sudo dnf versionlock add ultimateeditor

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-2019-12150?

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

Is CVE-2019-12150 being exploited?

CVE-2019-12150 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-2019-12150 affect?

CVE-2019-12150 affects ultimateeditor. Severity is critical (CVSS 9.8). Karamasoft UltimateEditor 1 does not ensure that an uploaded file is an image or document (neither file types nor extensions are restricted). The attacker must use the Attach icon to perform an upload. An uploaded file is accessible under t

How urgent is CVE-2019-12150?

Priority 64/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

References

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