CVE-2026-63428
Gravedad CVSS v3.1:
MEDIA
Tipo:
CWE-20
Validación incorrecta de entrada
Fecha de publicación:
20/07/2026
Última modificación:
20/07/2026
Descripción
*** Pendiente de traducción *** HeyForm is an open-source form builder. Prior to version 3.0.0-rc.9, `completeSubmission` accepts a `hiddenFields: [{id, name, value}]` array from the submitter and stores it verbatim in `submission.hiddenFields`, without validating the supplied `id`/`name` against the form's declared `form.hiddenFields` schema. An anonymous form submitter can therefore inject arbitrary key/value pairs (including XSS payloads, fake authorization metadata, integration-relevant values) into the stored submission. These fields are subsequently forwarded as-is to every webhook integration registered on the form. Version 3.0.0-rc.9 contains a patch for the issue.
Impacto
Puntuación base 3.x
5.80
Gravedad 3.x
MEDIA