High severity · published Sep 22, 2026
CVE-2026-94504
Ninja Forms – The Contact Form Builder That Grows With You <= 3.15.3 - Stored Cross-Site Scripting
7.2
CVSS
0.6%
EPSS
No
On KEV
Description
Ninja Forms 3.15.3 stores an anonymous non-RTE textarea value and renders it without safe HTML encoding in the legacy submission editor. An attacker can break out of the textarea with stored script. When an Administrator opens the attacker-known direct submission URL, the script runs in the WordPress admin origin.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 49% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NF
Ninja Forms – Contact Form Builder with Calculators, Quizzes, Signatures & AI Form Builder · kstover
through 3.15.3 · source: vendor
Affected product
NF
Ninja Forms – Contact Form Builder with Calculators, Quizzes, Signatures & AI Form Builder
kstover
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-94504
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-94504
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.3/includes/Database/Models/Submission.php#L205
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.3/includes/Fields/Textarea.php#L35
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.3/includes/Templates/admin-metabox-sub-fields.html.php#L23
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/ninja-forms/trunk/includes/Fields/Textarea.php#L35
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset?reponame=&new=3705719%40ninja-forms%2Ftags%2F3.15.4&old=3685242%40ninja-forms%2Ftags%2F3.15.3
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/c599a562-5218-4b37-bcf7-0e82008a4e68?source=cve
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7.2
CVE-2026-90438
Ninja Forms <= 3.15.4 - Unauthenticated Stored Cross-Site Scripting via Paragraph Text (RTE) Field Submission