--- title: "CVE-2026-90438: Ninja Forms - Stored Cross-Site Scripting" description: "Ninja Forms WordPress plugin <= 3.15.4 contains a stored cross-site scripting caused by insufficient input sanitization and output escaping in Paragraph Text (RTE) field, letting unauthenticated attackers inject scripts executed on user page access, exploit requires RTE enabled on Paragraph Text field." url: https://panop.io/threat-heartbeat/CVE-2026-90438/ --- # CVE-2026-90438 Ninja Forms - Stored Cross-Site Scripting Ninja Forms WordPress plugin <= 3.15.4 contains a stored cross-site scripting caused by insufficient input sanitization and output escaping in Paragraph Text (RTE) field, letting unauthenticated attackers inject scripts executed on user page access, exploit requires RTE enabled on Paragraph Text field. CVSS base score 7.2 /10 High CISA KEV Not listed Public exploit None known Authentication Not required EPSS 0.29% chance of exploitation in 30 days [View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-90438) ## Details Type Stored Cross-Site Scripting Impact Stored XSS CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N Published 2 October 2026 Updated 15 October 2026 Weakness [CWE-79](https://cwe.mitre.org/data/definitions/79.html) ## Vendor fix Update to a version later than 3.15.4 or the latest available version. Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them. ## References - [https://nvd.nist.gov/vuln/detail/CVE-2026-90438](https://nvd.nist.gov/vuln/detail/CVE-2026-90438) - [https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.3/includes/Database/Models/Submission.php#L308](https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.3/includes/Database/Models/Submission.php#L308) - [https://plugins.trac.wordpress.org/changeset/3717122/ninja-forms/trunk/includes/AJAX/Controllers/Submission.php](https://plugins.trac.wordpress.org/changeset/3717122/ninja-forms/trunk/includes/AJAX/Controllers/Submission.php) - [https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.2/includes/AJAX/Controllers/Submission.php#L61](https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.2/includes/AJAX/Controllers/Submission.php#L61) - [https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.2/includes/Helper.php#L261](https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.2/includes/Helper.php#L261) - [https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.3/build/submissions.js#L1](https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.3/build/submissions.js#L1) - [https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.3/includes/AJAX/Controllers/Submission.php#L61](https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.3/includes/AJAX/Controllers/Submission.php#L61) - [https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.3/includes/Helper.php#L261](https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.3/includes/Helper.php#L261) - [https://plugins.trac.wordpress.org/changeset?reponame=&new=3717122%40ninja-forms%2Ftags%2F3.15.5&old=3705719%40ninja-forms%2Ftags%2F3.15.4](https://plugins.trac.wordpress.org/changeset?reponame=&new=3717122%40ninja-forms%2Ftags%2F3.15.5&old=3705719%40ninja-forms%2Ftags%2F3.15.4) - [https://www.wordfence.com/threat-intel/vulnerabilities/id/a159485d-ce5b-46e7-8e63-a72012ccc180?source=cve](https://www.wordfence.com/threat-intel/vulnerabilities/id/a159485d-ce5b-46e7-8e63-a72012ccc180?source=cve) - [https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.2/build/submissions.js#L1](https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.2/build/submissions.js#L1) - [https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.2/includes/Database/Models/Submission.php#L308](https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.2/includes/Database/Models/Submission.php#L308) [← All CVEs](https://panop.io/threat-heartbeat/) ## What this record can't tell you - Whether you run the affected software, and where - Whether an attacker can actually reach and exploit it - The misconfigurations that never get a CVE number - What it would cost the business, ranked into what to fix first Panop answers these inside your environment, for this CVE and every other finding. [Book a demo](https://panop.io/demo)