CVE-2020-18035: Cross Site Scripting (XSS) in Jeesns v1.4.2 allows remote attackers to execute arbitrary code by injecting com

Routine

MEDIUM 6.1DOWNGRADE

CVE-2020-18035 is a medium-severity flaw (CVSS 6.1) affecting jeesns. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross Site Scripting (XSS) in Jeesns v1.4.2 allows remote attackers to execute arbitrary code by injecting commands into the "CKEditorFuncNum" parameter in the component "CkeditorUploadController.java".

Why this priority

No elevated risk signals yet

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	1.0% (top 36%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-04-29
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: jeesns

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

Am I affected?

Timeline

2021-04-29 23:15 UTCPublished CVE record published
2026-06-17 02:59 UTCUpdated Record last modified

jeesns jeesns DOWNGRADE

Affected: 1.4.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.4.2

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.4.2 (Debian / Ubuntu)

apt-cache madison jeesns sudo apt install jeesns=<VERSION_BEFORE_1.4.2> sudo apt-mark hold jeesns

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

dnf --showduplicates list jeesns sudo dnf downgrade jeesns-<VERSION_BEFORE_1.4.2> sudo dnf versionlock add jeesns

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-2020-18035?

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

Is CVE-2020-18035 being exploited?

CVE-2020-18035 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-2020-18035 affect?

CVE-2020-18035 affects jeesns. Severity is medium (CVSS 6.1). Cross Site Scripting (XSS) in Jeesns v1.4.2 allows remote attackers to execute arbitrary code by injecting commands into the "CKEditorFuncNum" parameter in the component "CkeditorUploadController.java".

How urgent is CVE-2020-18035?

Priority 37/100. No elevated risk signals yet.

Software pages

Java vulnerabilities

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References

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