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.
Published: 2026-09-22
Score: 7.2 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Tue, 22 Sep 2026 19:45:00 +0000

Type Values Removed Values Added
First Time appeared Kstover
Kstover ninja Forms – Contact Form Builder With Calculators, Quizzes, Signatures & Ai Form Builder
Wordpress
Wordpress wordpress
Vendors & Products Kstover
Kstover ninja Forms – Contact Form Builder With Calculators, Quizzes, Signatures & Ai Form Builder
Wordpress
Wordpress wordpress

Tue, 22 Sep 2026 07:00:00 +0000

Type Values Removed Values Added
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.
Title Ninja Forms – The Contact Form Builder That Grows With You <= 3.15.3 - Stored Cross-Site Scripting
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 7.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N'}


Subscriptions

Kstover Ninja Forms – Contact Form Builder With Calculators, Quizzes, Signatures & Ai Form Builder
Wordpress Wordpress
cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-09-22T14:13:49.472Z

Reserved: 2026-09-21T18:14:35.313Z

Link: CVE-2026-94504

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-09-22T07:16:31.340

Modified: 2026-09-22T19:04:55.677

Link: CVE-2026-94504

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-22T19:15:59Z

Weaknesses
  • CWE-79

    Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')