CVE-2026-35198

HeyForm (open-source form builder) is affected by a stored XSS vulnerability present before version 3.0.0-rc.7. A low-privileged team member can inject malicious JavaScript that executes when a team owner views the form, enabling complete account takeover through privilege escalation. A fix is av...

CVE-2026-45797

CVE-2026-45797 affects HeyForm (open-source form builder). Before version 3.0.0-rc.7, the /api/upload endpoint allowed unauthenticated file uploads, including SVGs. Uploaded SVGs are stored in the static assets directory and served with Content-Type: image/svg+xml by Express’s serve-static middle...

CVE-2026-45797 HeyForm Vulnerable to Stored XSS via Unauthenticated SVG File Upload

HeyForm is an open-source form builder. Prior to version 3.0.0-rc.7, the /api/upload endpoint allows unauthenticated file uploads including SVG files. Uploaded SVGs are stored in the static assets directory and served with Content-Type: image/svg+xml by Express's serve-static middleware, allowing...