CVE-2018-19287: XSS in the Ninja Forms plugin before 3.3.18 for WordPress allows Remote Attackers to execute JavaScript via th

Q: How do I fix CVE-2018-19287?

ninja forms: upgrade to 3.3.18. Exact commands for each OS are on this page.

Q: Is CVE-2018-19287 being exploited?

CVE-2018-19287 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2018-19287 affect?

CVE-2018-19287 affects ninja forms. Severity is medium (CVSS 6.1). XSS in the Ninja Forms plugin before 3.3.18 for WordPress allows Remote Attackers to execute JavaScript via the includes/Admin/Menus/Submissions.php (aka submissions page) begin_date, end_date, or form_id parameter.

Q: How urgent is CVE-2018-19287?

Priority 50/100. EPSS top 5%: very likely to be exploited; Public exploit reference

This week

MEDIUM 6.1UPGRADE

CVE-2018-19287 is a medium-severity flaw (CVSS 6.1) affecting ninja forms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

XSS in the Ninja Forms plugin before 3.3.18 for WordPress allows Remote Attackers to execute JavaScript via the includes/Admin/Menus/Submissions.php (aka submissions page) begin_date, end_date, or form_id parameter.

Why this priority

EPSS top 5%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	8.9% (top 5%)
CISA exploited list	No
Weakness	CWE-79
Published	2018-11-15
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: ninjaforma

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

Am I affected?

Timeline

2018-11-15 06:29 UTCPublished CVE record published
2026-06-17 01:49 UTCUpdated Record last modified

ninjaforma ninja forms UPGRADE

Affected: < 3.3.18

Fixed in: 3.3.18

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy ninja-forms || rpm -q ninja-forms || ninja-forms --version

2. UPGRADE to 3.3.18 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade ninja-forms

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ninja-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.

Exploit-DB: WordPress Plugin Ninja Forms 3.3.17 - Cross-Site Scripting
Nuclei scan template: WordPress Ninja Forms <3.3.18 - 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-2018-19287?

ninja forms: upgrade to 3.3.18. Exact commands for each OS are on this page.

Is CVE-2018-19287 being exploited?

CVE-2018-19287 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-2018-19287 affect?

CVE-2018-19287 affects ninja forms. Severity is medium (CVSS 6.1). XSS in the Ninja Forms plugin before 3.3.18 for WordPress allows Remote Attackers to execute JavaScript via the includes/Admin/Menus/Submissions.php (aka submissions page) begin_date, end_date, or form_id parameter.

How urgent is CVE-2018-19287?

Priority 50/100. EPSS top 5%: very likely to be exploited; Public exploit reference

Software pages

WordPress vulnerabilities · PHP vulnerabilities

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References

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