Skip to content
OpenAdvisories
Medium · 6.5 CVE-2026-100155 EUVD-2026-114578GHSA-pqjx-p6p5-mv3f

Ninja Forms <= 3.15.5 - Unauthenticated Arbitrary Shortcode Execution via 'formData' Field Value via Success Message Merge Tag

Published Oct 31, 2026 · Updated Nov 2, 2026 · Assigned by Wordfence

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.

Affected products

VendorProductAffectedFixed
kstover Ninja Forms – Contact Form Builder with Calculators, Quizzes, Signatures & AI Form Builder ≤ 3.15.5 —

References