CVE-2019-7543: In KindEditor 4.1.11, the php/demo.php content1 parameter has a reflected Cross-site Scripting (XSS) vulnerabi

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MEDIUM 6.1DOWNGRADE

CVE-2019-7543 is a medium-severity flaw (CVSS 6.1) affecting kindeditor. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In KindEditor 4.1.11, the php/demo.php content1 parameter has a reflected Cross-site Scripting (XSS) vulnerability.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	3.6% (top 10%)
CISA exploited list	No
Weakness	CWE-79
Published	2019-02-06
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: kindsoft

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

Am I affected?

Timeline

2019-02-06 21:29 UTCPublished CVE record published
2026-06-17 02:40 UTCUpdated Record last modified

kindsoft kindeditor DOWNGRADE

Affected: 4.1.11

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.1.11

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 4.1.11 (Debian / Ubuntu)

apt-cache madison kindeditor sudo apt install kindeditor=<VERSION_BEFORE_4.1.11> sudo apt-mark hold kindeditor

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

dnf --showduplicates list kindeditor sudo dnf downgrade kindeditor-<VERSION_BEFORE_4.1.11> sudo dnf versionlock add kindeditor

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Nuclei scan template: KindEditor 4.1.11 - Cross-Site Scripting

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-2019-7543?

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

Is CVE-2019-7543 being exploited?

CVE-2019-7543 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-2019-7543 affect?

CVE-2019-7543 affects kindeditor. Severity is medium (CVSS 6.1). In KindEditor 4.1.11, the php/demo.php content1 parameter has a reflected Cross-site Scripting (XSS) vulnerability.

How urgent is CVE-2019-7543?

Priority 49/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2021-42228 HIGH 8.8 UPGRADE A Cross Site Request Forgery (CSRF) vulnerability exists in KindEditor 4.1.x, as demonstrated by examples/uplo
CVE-2021-42227 MEDIUM 6.1 UPGRADE Cross SIte Scripting (XSS) vulnerability exists in KindEditor 4.1.x via a Google search inurl:/examples/upload
CVE-2021-37267 MEDIUM 6.1 MITIGATE Cross Site Scripting (XSS) vulnerability exists in all versions of KindEditor, which can be exploited by an at
CVE-2021-30086 MEDIUM 6.1 DOWNGRADE Cross Site Scripting (XSS) vulnerability exists in KindEditor (Chinese versions) 4.1.12, which can be exploite
CVE-2020-28717 MEDIUM 6.1 DOWNGRADE Cross Site Scripting (XSS) vulnerability in content1 parameter in demo.jsp in kindsoft kindeditor version 4.1.

References

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