CVE-2026-35198
CRITICAL
NVD
CVSS Score
9
Severity
CRITICAL
Published
Jul 20, 2026
Vendor
unknown
Description
HeyForm is an open-source form builder. Prior to version 3.0.0-rc.7, a stored cross-site scripting (XSS) vulnerability in the form builder allows a low-privileged team member to inject malicious JavaScript that executes when a team owner views the form, leading to complete account takeover through privilege escalation. Version 3.0.0-rc.7 contains a patch for the issue.