CVE-2018-7543: Cross-site scripting (XSS) vulnerability in installer/build/view.step4.php of the SnapCreek Duplicator plugin

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MEDIUM 6.1DOWNGRADE

CVE-2018-7543 is a medium-severity flaw (CVSS 6.1) affecting duplicator. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in installer/build/view.step4.php of the SnapCreek Duplicator plugin 1.2.32 for WordPress allows remote attackers to inject arbitrary JavaScript or HTML via the json parameter.

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	3.3% (top 11%)
CISA exploited list	No
Weakness	CWE-79
Published	2018-03-26
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: awesomemotive

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

Am I affected?

Timeline

2018-03-26 18:29 UTCPublished CVE record published
2026-06-17 02:03 UTCUpdated Record last modified

awesomemotive duplicator DOWNGRADE

Affected: 1.2.32

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.2.32

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.2.32 (Debian / Ubuntu)

apt-cache madison duplicator sudo apt install duplicator=<VERSION_BEFORE_1.2.32> sudo apt-mark hold duplicator

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

dnf --showduplicates list duplicator sudo dnf downgrade duplicator-<VERSION_BEFORE_1.2.32> sudo dnf versionlock add duplicator

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.

Exploit-DB: WordPress Plugin Duplicator 1.2.32 - 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-2018-7543?

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

Is CVE-2018-7543 being exploited?

CVE-2018-7543 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-2018-7543 affect?

CVE-2018-7543 affects duplicator. Severity is medium (CVSS 6.1). Cross-site scripting (XSS) vulnerability in installer/build/view.step4.php of the SnapCreek Duplicator plugin 1.2.32 for WordPress allows remote attackers to inject arbitrary JavaScript or HTML via the json parameter.

How urgent is CVE-2018-7543?

Priority 49/100. Public exploit reference

Software pages

WordPress vulnerabilities · PHP vulnerabilities

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References

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