{"id":"CVE-2026-35198","state":"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.","publishedAt":"2026-07-20T15:47:21.255Z","updatedAt":"2026-08-21T19:58:19.726Z","severity":{"score":9,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["heyform heyform"],"affected":[{"vendor":"heyform","product":"heyform","versions":[{"version":"< 3.0.0-rc.7","status":"affected"}]}],"references":["https://github.com/heyform/heyform/security/advisories/GHSA-chmm-jqpm-3pwx","https://github.com/heyform/heyform/commit/cc97d27a57ae400fec23abf5dcf6f9533c3b5db3","https://vokecyber.com/research/cve-2026-35198-heyform-stored-xss"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:11:40.391Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/35xxx/CVE-2026-35198.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-35198","state":"PUBLISHED","datePublished":"2026-07-20T15:47:21.255Z","dateUpdated":"2026-08-21T19:58:19.726Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-04-01T18:48:58.937Z"},"containers":{"cna":{"title":"HeyForm vulnerable to stored XSS via form field titles","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"heyform","product":"heyform","versions":[{"version":"< 3.0.0-rc.7","status":"affected"}]}],"references":[{"url":"https://github.com/heyform/heyform/security/advisories/GHSA-chmm-jqpm-3pwx","name":"https://github.com/heyform/heyform/security/advisories/GHSA-chmm-jqpm-3pwx","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/heyform/heyform/commit/cc97d27a57ae400fec23abf5dcf6f9533c3b5db3","name":"https://github.com/heyform/heyform/commit/cc97d27a57ae400fec23abf5dcf6f9533c3b5db3","tags":["x_refsource_MISC"]},{"url":"https://vokecyber.com/research/cve-2026-35198-heyform-stored-xss","name":"https://vokecyber.com/research/cve-2026-35198-heyform-stored-xss","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-08-21T19:58:19.726Z"},"source":{"advisory":"GHSA-chmm-jqpm-3pwx","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/heyform/heyform/security/advisories/GHSA-chmm-jqpm-3pwx","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-20T19:01:46.436306Z","id":"CVE-2026-35198","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-20T19:02:26.984Z"}}]}}}