CVE-2026-35198

CRITICAL SEVERITY

CVSS Score & Metrics

Base Score

9.0 / 10

Vector String

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

Vulnerability 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.

Vulnerability Details

Published Date

July 20, 2026

Last Modified

July 20, 2026

CWE ID

CWE-79

Source

NVD

Vendor

heyform

Product

heyform

External References

https://github.com/heyform/heyform/commit/cc97d27a57ae400fec23abf5dcf6f9533c3b5db3
https://github.com/heyform/heyform/security/advisories/GHSA-chmm-jqpm-3pwx

CVE-2026-35198

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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