{"id":"CVE-2026-82291","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-82291","summary":"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…","details":"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.","published":"2026-08-28T20:20:20.820","modified":"2026-08-28T20:20:20.820","cvss":{"score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/heyform/heyform/commit/bf9d738ca70ae5641c0c7372982b00365c5144d4","label":"heyform/heyform@bf9d738"},"references":[{"type":"WEB","url":"https://github.com/heyform/heyform"},{"type":"WEB","url":"https://github.com/heyform/heyform/blob/v3.0.0-rc.7/packages/server/src/main.ts"},{"type":"WEB","url":"https://github.com/heyform/heyform/commit/bf9d738ca70ae5641c0c7372982b00365c5144d4"},{"type":"WEB","url":"https://github.com/heyform/heyform/security/advisories/GHSA-fg7j-rmgr-rc9g"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/heyform-reflects-any-origin-in-cors-responses-while-allowing-credentials"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-28T20:20:20.820"}}