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CVE-2018-7747: Multiple cross-site scripting (XSS) vulnerabilities in the Caldera Forms plugin before 1.6.0-rc.1 for WordPres

45
This month
MEDIUM 4.8UPGRADE

CVE-2018-7747 is a medium-severity flaw (CVSS 4.8) affecting caldera forms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple cross-site scripting (XSS) vulnerabilities in the Caldera Forms plugin before 1.6.0-rc.1 for WordPress allow remote attackers to inject arbitrary web script or HTML via vectors involving (1) a greeting message, (2) the email transaction log, or (3) an imported form.

Why this priority

  • EPSS top 9%: very likely to be exploited
  • Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score4.8 (Medium)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededHigh
User interactionRequired
EPSS exploit chance4.4% (top 9%)
CISA exploited listNo
WeaknessCWE-79
Published2018-04-20
Last modified2026-06-17
Publisher (CNA): MITRE · Vendor: calderalabs

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

Am I affected?

Timeline

calderalabs caldera forms UPGRADE
Affected: <= 1.5.9
Fixed in: newer than 1.5.9
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy caldera-forms || rpm -q caldera-forms || caldera-forms --version
2. UPGRADE to newer than 1.5.9 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade caldera-forms
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade caldera-forms
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Public exploits and detection

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

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-2018-7747?

caldera forms: upgrade to newer than 1.5.9. Exact commands for each OS are on this page.

Is CVE-2018-7747 being exploited?

CVE-2018-7747 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-2018-7747 affect?

CVE-2018-7747 affects caldera forms. Severity is medium (CVSS 4.8). Multiple cross-site scripting (XSS) vulnerabilities in the Caldera Forms plugin before 1.6.0-rc.1 for WordPress allow remote attackers to inject arbitrary web script or HTML via vectors involving (1) a greeting message, (2) the email transa

How urgent is CVE-2018-7747?

Priority 45/100. EPSS top 9%: very likely to be exploited; Public exploit reference

Software pages

WordPress vulnerabilities

Related CVEs

References

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