Description
The The Ninja Forms – Contact Form Builder with Calculators, Quizzes, Signatures & AI Form Builder plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 3.15.5 This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes.
Published: 2026-10-31
Score: 6.5 Medium
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

Mon, 02 Nov 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sat, 31 Oct 2026 08:00:00 +0000

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

Sat, 31 Oct 2026 05:45:00 +0000

Type Values Removed Values Added
Description The The Ninja Forms – Contact Form Builder with Calculators, Quizzes, Signatures & AI Form Builder plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 3.15.5 This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes.
Title Ninja Forms <= 3.15.5 - Unauthenticated Arbitrary Shortcode Execution via 'formData' Field Value via Success Message Merge Tag
Weaknesses CWE-94
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N'}


Subscriptions

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

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-11-02T14:50:42.803Z

Reserved: 2026-09-25T12:17:34.300Z

Link: CVE-2026-100155

cve-icon Vulnrichment

Updated: 2026-11-02T14:50:39.254Z

cve-icon NVD

Status : Deferred

Published: 2026-10-31T06:16:29.350

Modified: 2026-11-02T16:19:19.997

Link: CVE-2026-100155

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-31T07:45:07Z

Weaknesses