{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-82291", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-08-28T11:12:54.442Z", "datePublished": "2026-08-28T16:19:07.930Z", "dateUpdated": "2026-08-28T16:19:07.930Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-08-28T16:19:07.930Z"}, "datePublic": "2026-06-23T00:00:00.000Z", "title": "HeyForm Reflects Any Origin in CORS Responses While Allowing Credentials", "descriptions": [{"lang": "en", "value": "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Permissive Cross-domain Security Policy with Untrusted Domains", "cweId": "CWE-942", "type": "CWE"}]}], "affected": [{"vendor": "heyform", "product": "heyform", "versions": [{"version": "0", "lessThan": "3.0.0-rc.8", "status": "affected", "versionType": "semver"}], "defaultStatus": "unaffected"}], "metrics": [{"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE", "baseScore": 8.1, "baseSeverity": "HIGH"}}], "references": [{"url": "https://github.com/heyform/heyform/security/advisories/GHSA-fg7j-rmgr-rc9g", "tags": ["vendor-advisory"], "name": "GHSA-fg7j-rmgr-rc9g"}, {"url": "https://github.com/heyform/heyform/blob/v3.0.0-rc.7/packages/server/src/main.ts", "tags": ["technical-description"], "name": "Vulnerable code: main.ts"}, {"url": "https://github.com/heyform/heyform/commit/bf9d738ca70ae5641c0c7372982b00365c5144d4", "tags": ["patch"], "name": "Fix commit"}, {"url": "https://github.com/heyform/heyform", "tags": ["product"]}, {"name": "VulnCheck Advisory: HeyForm Reflects Any Origin in CORS Responses While Allowing Credentials", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/heyform-reflects-any-origin-in-cors-responses-while-allowing-credentials"}], "credits": [{"lang": "en", "value": "George Chen", "type": "reporter"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "heyform", "vendor": "heyform", "versions": [{"lessThan": "3.0.0-rc.8", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "disclosure@vulncheck.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-82291", "lastModified": "2026-08-28T20:20:20.820", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.2, "source": "disclosure@vulncheck.com", "type": "Primary"}]}, "published": "2026-08-28T20:20:20.820", "references": [{"source": "disclosure@vulncheck.com", "url": "https://github.com/heyform/heyform"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/heyform/heyform/blob/v3.0.0-rc.7/packages/server/src/main.ts"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/heyform/heyform/commit/bf9d738ca70ae5641c0c7372982b00365c5144d4"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/heyform/heyform/security/advisories/GHSA-fg7j-rmgr-rc9g"}, {"source": "disclosure@vulncheck.com", "url": "https://www.vulncheck.com/advisories/heyform-reflects-any-origin-in-cors-responses-while-allowing-credentials"}], "sourceIdentifier": "disclosure@vulncheck.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-942"}], "source": "disclosure@vulncheck.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,3.0.0-rc.8)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "heyform", "source": "cna", "vendor": "heyform"}, "product": "heyform", "vendor": "heyform"}], "created": "2026-08-28T22:00:14.627225+00:00", "updated": "2026-08-28T22:30:17.715686+00:00", "vendors": ["heyform", "heyform$PRODUCT$heyform"]}