PT-2026-61616 · Heyform · Heyform

CVE-2026-35198 · Published 2026-07-20 · Updated 2026-07-20

Positive Technologies (AI Summary)

CVSS v3.1

9.0

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions HeyForm versions prior to 3.0.0-rc.7

Description A stored cross-site scripting (XSS) issue in the form builder allows a low-privileged team member to inject malicious JavaScript. This script executes when a team owner views the form, which can result in complete account takeover via privilege escalation.

Recommendations Update to version 3.0.0-rc.7.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-35198

GHSA-CHMM-JQPM-3PWX

Affected Products

Heyform

References · 6

• 🔥 https://github.com/heyform/heyform/security/advisories/GHSA-chmm-jqpm-3pwx · Exploit
• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/35xxx/CVE-2026-35198.json · Exploit
• https://osv.dev/vulnerability/CVE-2026-35198 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-35198 · Security Note
• https://github.com/heyform/heyform/commit/cc97d27a57ae400fec23abf5dcf6f9533c3b5db3 · Note
• https://twitter.com/CVEnew/status/2079238905979645976 · Twitter Post