CVE-2026-15256CWE-74

CVE-2026-15256

Medium · published August 7, 2026

CVSS v3.1
4.8
EPSS
0%
Percentile
14.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00243 · 14.6th percentile
Weakness
CWE-74 · Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
Published
2026-08-07T02:16Z
References (1)
EPSS history
Timeline
  • 06 AUG 17:14Z
    Ninja Forms < 3.14.10 - Unauthenticated Arbitrary Shortcode Execution via Query-String Populated Field Default
    cvelistv5