{"id":"CVE-2026-35198","aliases":["EUVD-2026-45984","GHSA-chmm-jqpm-3pwx"],"status":"published","title":"HeyForm vulnerable to stored XSS via form field titles","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.","severity":{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.0049,"percentile":0.42592,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2026-07-20T15:47:21Z","modified":"2026-10-28T02:31:07Z","products":[{"vendor":"heyform","product":"heyform"}],"references":[{"url":"https://github.com/heyform/heyform/security/advisories/GHSA-chmm-jqpm-3pwx","tags":["x_refsource_CONFIRM","exploit","advisory"]},{"url":"https://github.com/heyform/heyform/commit/cc97d27a57ae400fec23abf5dcf6f9533c3b5db3","tags":["x_refsource_MISC","fix"]},{"url":"https://vokecyber.com/research/cve-2026-35198-heyform-stored-xss","tags":["x_refsource_MISC","web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/35xxx/CVE-2026-35198.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-35198","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-35198","title":"HeyForm vulnerable to stored XSS via form field titles","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.","status":"published","published":"2026-07-20T15:47:21.255Z","modified":"2026-08-21T19:58:19.726Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:20:05.505362Z"}],"euvd":[{"id":"EUVD-2026-45984","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.","status":"published","published":"2026-07-20T15:47:21Z","modified":"2026-08-21T19:58:19Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T18:01:36.844009Z"}],"nvd":[{"id":"CVE-2026-35198","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.","status":"published","published":"2026-07-20T16:16:58.44Z","modified":"2026-08-21T20:16:34.723Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:12:31.024898Z"}],"osv":[{"id":"CVE-2026-35198","title":"HeyForm vulnerable to stored XSS via form field titles","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.","status":"published","published":"2026-07-20T15:47:21.255Z","modified":"2026-10-28T02:31:07.658437438Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:45:02.673625Z"}]}}