Vulnerability 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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.4/includes/AJAX
- https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.4/includes/AJAX
- https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.4/includes/Abst
- https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.4/includes/Acti
- https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.4/includes/Acti
- https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.4/includes/Merg
- https://plugins.trac.wordpress.org/changeset?reponame=&new=3749135%40ninja-forms
- https://wordpress.org/plugins/ninja-forms/
- https://www.wordfence.com/threat-intel/vulnerabilities/id/a1cf42f7-77c6-4594-a6a
FAQ
What is CVE-2026-100155?
CVE-2026-100155 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 includ...
How severe is CVE-2026-100155?
CVE-2026-100155 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-100155?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.