Critical 9.0Published Jul 20, 2026

CVE-2026-35198HeyForm vulnerable to stored XSS via form field titles

Updated under an hour ago (Oct 27, 2026, 2:00 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for heyform

Exploited in the last 30 days

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.

CVSS: 9.0 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Aug 21, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

heyform heyform heyform:heyform (from the name)	before 3.0.0-rc.7	CNA record

References

References

https://github.com/heyform/heyform/security/advisories/GHSA-chmm-jqpm-3pwx	x-refsource-confirm
https://github.com/heyform/heyform/commit/cc97d27a57ae400fec23abf5dcf6f9533c3b5db3	x-refsource-misc
https://vokecyber.com/research/cve-2026-35198-heyform-stored-xss	x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.