{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "heyform",
          "vendor": "heyform",
          "versions": [
            {
              "lessThan": "3.0.0-rc.8",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "George Chen"
        }
      ],
      "datePublic": "2026-06-23T00:00:00.000Z",
      "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "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"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-942",
              "description": "Permissive Cross-domain Security Policy with Untrusted Domains",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-29T11:48:21.218Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "name": "GitHub Security Advisory (GHSA-fg7j-rmgr-rc9g)",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://github.com/heyform/heyform/security/advisories/GHSA-fg7j-rmgr-rc9g"
        },
        {
          "name": "Vulnerable code: main.ts",
          "tags": [
            "technical-description"
          ],
          "url": "https://github.com/heyform/heyform/blob/v3.0.0-rc.7/packages/server/src/main.ts"
        },
        {
          "name": "Fix commit",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/heyform/heyform/commit/bf9d738ca70ae5641c0c7372982b00365c5144d4"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://github.com/heyform/heyform"
        },
        {
          "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"
        }
      ],
      "title": "HeyForm Reflects Any Origin in CORS Responses While Allowing Credentials",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-82291",
    "datePublished": "2026-08-28T16:19:07.930Z",
    "dateReserved": "2026-08-28T11:12:54.442Z",
    "dateUpdated": "2026-08-29T11:48:21.218Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}