CVE-2026-35198
HeyForm vulnerable to stored XSS via form field titles
CVSS Score
9.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-79 |
| Vendor | heyform |
| Product | heyform |
| Published | Jul 20, 2026 |
| Last Updated | Jul 20, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
heyform / heyform
< 3.0.0-rc.7