CVE-2026-63428

Katalog CVE

CVSS 5.8 · Medium EPSS 0,34%

Kerentanan Improper Input Validation. Skor CVSS 3.1 5.8 (Medium) menurut github.com.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

20 Juli 2026

Terakhir diubah

22 Juli 2026

Status NVD

Deferred

CVSS 3.1

5.8 (Medium), sumber github.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-20: Improper Input Validation
CWE-915: Improperly Controlled Modification of Dynamically-Determined Object Attributes

EPSS (30 hari)

0,34% peluang dieksploitasi; lebih tinggi dari 25,9% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://github.com/heyform/heyform/commit/092e255e9e02565de1b3c057f3dad849160952d2
• https://github.com/heyform/heyform/security/advisories/GHSA-r7vg-xh87-v4w3