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CVE-2026-35198

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:84f7682300e003b77979aa0a116c47cf381e44f1504b0e7d7a48a4e184fd252c
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"heyform","vendor":"heyform","versions":[{"status":"affected","version":"< 3.0.0-rc.7"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:521db251ebea2d9354aaf15fbb9cfeb840d89dc643021ec8eeb2b416784c0929 · sha256:872b2abbc6cee9f9… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"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"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:521db251ebea2d9354aaf15fbb9cfeb840d89dc643021ec8eeb2b416784c0929 · sha256:872b2abbc6cee9f9… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:521db251ebea2d9354aaf15fbb9cfeb840d89dc643021ec8eeb2b416784c0929 · sha256:872b2abbc6cee9f9… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/heyform/heyform/commit/cc97d27a57ae400fec23abf5dcf6f9533c3b5db3","tags":["x_refsource_MISC"],"url":"https://github.com/heyform/heyform/commit/cc97d27a57ae400fec23abf5dcf6f9533c3b5db3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:521db251ebea2d9354aaf15fbb9cfeb840d89dc643021ec8eeb2b416784c0929 · sha256:872b2abbc6cee9f9… · /containers/cna/references/1
{"tags":["exploit"],"url":"https://github.com/heyform/heyform/security/advisories/GHSA-chmm-jqpm-3pwx"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:521db251ebea2d9354aaf15fbb9cfeb840d89dc643021ec8eeb2b416784c0929 · sha256:872b2abbc6cee9f9… · /containers/adp/0/references/0
{"name":"https://github.com/heyform/heyform/security/advisories/GHSA-chmm-jqpm-3pwx","tags":["x_refsource_CONFIRM"],"url":"https://github.com/heyform/heyform/security/advisories/GHSA-chmm-jqpm-3pwx"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:521db251ebea2d9354aaf15fbb9cfeb840d89dc643021ec8eeb2b416784c0929 · sha256:872b2abbc6cee9f9… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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