CVE-2026-90438 json
Ninja Forms <= 3.15.4 - Unauthenticated Stored Cross-Site Scripting via Paragraph Text (RTE) Field Submission
published last mo. modified last mo. also EUVD-2026-91177
- cvss
- 7.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 22%
- public exploits
- 0
- none known
Summary
The Ninja Forms – The Contact Form Builder That Grows With You plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Paragraph Text (RTE) Field Submission in all versions up to, and including, 3.15.4 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is only exploitable when the targeted Paragraph Text field has the Rich Text Editor (RTE) option enabled.
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- last mo.
Exploit prediction
0.29% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
Affected products
- kstover Ninja Forms – Contact Form Builder with Calculators, Quizzes, Signatures & AI Form Builder
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/a159485d-ce5b-46e7-8e63-a72012ccc180?source=cve
- plugins.trac.wordpress.org /browser/ninja-forms/tags/3.15.3/build/submissions.js#L1
- plugins.trac.wordpress.org /browser/ninja-forms/tags/3.15.3/includes/Helper.php#L261
- plugins.trac.wordpress.org /browser/ninja-forms/tags/3.15.3/includes/Database/Models/Submission.php#L308
- plugins.trac.wordpress.org /browser/ninja-forms/tags/3.15.3/includes/AJAX/Controllers/Submission.php#L61
- plugins.trac.wordpress.org /browser/ninja-forms/tags/3.15.2/build/submissions.js#L1
- plugins.trac.wordpress.org /browser/ninja-forms/tags/3.15.2/includes/Helper.php#L261
- plugins.trac.wordpress.org /browser/ninja-forms/tags/3.15.2/includes/Database/Models/Submission.php#L308
- plugins.trac.wordpress.org /browser/ninja-forms/tags/3.15.2/includes/AJAX/Controllers/Submission.php#L61
- plugins.trac.wordpress.org /changeset?reponame=&new=3717122%40ninja-forms%2Ftags%2F3.15.5&old=3705719%40ninja-forms%2Ftags%2F3.15.4
- plugins.trac.wordpress.org /changeset/3717122/ninja-forms/trunk/includes/AJAX/Controllers/Submission.php
Sources
- CVE List CVE-2026-90438
- NVD CVE-2026-90438
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.