CVE-2026-100155
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:Oct 31, 2026
Last Modified:Nov 2, 2026
EPS:Oct 31, 2026
EPSS Score:0.00514
CVSS Score:6.5
Affected Products
Vendor
Product
Action
Vendor
Kstover
Product
Ninja Forms – Contact Form Builder With Calculators, Quizzes, Signatures & Ai Form Builder
Kstover
Ninja Forms – Contact Form Builder With Calculators, Quizzes, Signatures & Ai Form Builder
Vendor
Wordpress-extensions
Product
Ninja Forms
Wordpress-extensions
Ninja Forms
Exploits
No exploit reference
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
Related CVEs
References
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
