[CVE-2026-63429] HeyForm is an open-source form builder. Prior to version 3.0.0-rc.9, `POST /api/upload` has no authe…

Descripción técnica

HeyForm is an open-source form builder. Prior to version 3.0.0-rc.9, `POST /api/upload` has no authentication guard, no global guard, no form-context validation, no `openToken` requirement, and no session cookie check. Any anonymous internet user can upload files (PDF, DOC/DOCX, XLS/XLSX, CSV, TXT, MP4, images, etc., up to 10 MB) and receive a permanent public URL on the HeyForm domain. The endpoint is used by both authenticated form creators and unauthenticated form submitters; because no form-context binding exists, every request to it is anonymously accepted. Version 3.0.0-rc.9 contains a patch for the issue.

Puntuación CVSS

Score: 8.6/10 — Severidad: HIGH — Estado NIST: Deferred

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L

Debilidades (CWE)

CWE-306, CWE-434

Fuente oficial

Publicado en NIST NVD.