CVE-2020-28717: Cross Site Scripting (XSS) vulnerability in content1 parameter in demo.jsp in kindsoft kindeditor version 4.1.

Routine

MEDIUM 6.1DOWNGRADE

CVE-2020-28717 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.

Cross Site Scripting (XSS) vulnerability in content1 parameter in demo.jsp in kindsoft kindeditor version 4.1.12, allows attackers to execute arbitrary code.

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	0.5% (top 56%)
CISA exploited list	No
Weakness	CWE-79
Published	2023-08-11
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

2023-08-11 14:15 UTCPublished CVE record published
2026-06-17 03:10 UTCUpdated Record last modified

kindsoft kindeditor DOWNGRADE

Affected: 4.1.12

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.1.12

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 4.1.12 (Debian / Ubuntu)

apt-cache madison kindeditor sudo apt install kindeditor=<VERSION_BEFORE_4.1.12> sudo apt-mark hold kindeditor

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

dnf --showduplicates list kindeditor sudo dnf downgrade kindeditor-<VERSION_BEFORE_4.1.12> 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.

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-2020-28717?

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

Is CVE-2020-28717 being exploited?

CVE-2020-28717 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-2020-28717 affect?

CVE-2020-28717 affects kindeditor. Severity is medium (CVSS 6.1). Cross Site Scripting (XSS) vulnerability in content1 parameter in demo.jsp in kindsoft kindeditor version 4.1.12, allows attackers to execute arbitrary code.

How urgent is CVE-2020-28717?

Priority 37/100. Public exploit reference

References

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