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CVE-2026-15256mediumCWE-74

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

30Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 4.8
exploitation probability
observed exploitation
nono source reports it
1 public exploit(s)
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Affected products
Unknown · Ninja Forms
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.