Vulnerabilities CVE-2026-15256

CVE-2026-15256

Medium

Open

TLP:CLEAR

Ninja Forms < 3.14.10 - Unauthenticated Arbitrary Shortcode Execution via Query-String Populated Field Default

NVD CVE.org

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Description

The Ninja Forms WordPress plugin before 3.14.10 does not prevent user-supplied query-string input, used to pre-populate a form field's default value, from being processed as a shortcode, allowing unauthenticated attackers to execute arbitrary shortcodes registered on the site when a form so configured is embedded on a public page.

Details

CVSS Score: 4.8
EPSS Score ⓘ: 0.19%

8.6th percentile
CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Confidence: 90%
Published: Aug 6, 2026
Last Modified: Aug 7, 2026

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