{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "3.0.0-rc.8"
              }
            ],
            "source": [
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6f8cdc7dd5b4d3789c726e9d5e4f05f6edcd3eb8"
            },
            {
              "fixed": "bf9d738ca70ae5641c0c7372982b00365c5144d4"
            }
          ],
          "repo": "https://github.com/heyform/heyform",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-fg7j-rmgr-rc9g"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-942"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82291.json"
  },
  "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.",
  "id": "CVE-2026-82291",
  "modified": "2026-09-02T03:30:22.642073580Z",
  "published": "2026-08-28T16:19:07.930Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82291.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/heyform/heyform/security/advisories/GHSA-fg7j-rmgr-rc9g"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-82291"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/heyform-reflects-any-origin-in-cors-responses-while-allowing-credentials"
    },
    {
      "type": "FIX",
      "url": "https://github.com/heyform/heyform/commit/bf9d738ca70ae5641c0c7372982b00365c5144d4"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/heyform/heyform"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/heyform/heyform/blob/v3.0.0-rc.7/packages/server/src/main.ts"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "HeyForm Reflects Any Origin in CORS Responses While Allowing Credentials"
}