Vulnerability Description
HeyForm before 3.0.0-rc.8 reflects the request Origin header in CORS responses while allowing credentials, enabling cross-origin requests with authentication. Attackers can execute authenticated GraphQL queries from malicious pages visited by logged-in users to access workspaces, projects, forms, submissions, and respondent data, or modify account settings.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/heyform/heyform
- https://github.com/heyform/heyform/blob/v3.0.0-rc.7/packages/server/src/main.ts
- https://github.com/heyform/heyform/commit/bf9d738ca70ae5641c0c7372982b00365c5144
- https://github.com/heyform/heyform/security/advisories/GHSA-fg7j-rmgr-rc9g
- https://www.vulncheck.com/advisories/heyform-reflects-any-origin-in-cors-respons
- https://github.com/heyform/heyform/security/advisories/GHSA-fg7j-rmgr-rc9g
FAQ
What is CVE-2026-82291?
CVE-2026-82291 is a vulnerability with a CVSS score of 8.1 (HIGH). HeyForm before 3.0.0-rc.8 reflects the request Origin header in CORS responses while allowing credentials, enabling cross-origin requests with authentication. Attackers can execute authenticated Graph...
How severe is CVE-2026-82291?
CVE-2026-82291 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-82291?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.