{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "3.40.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "661fe55d609404d073eea86702e0bde7942c3f10"
            }
          ],
          "repo": "https://github.com/budibase/budibase",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-c8vc-7pv3-g98p"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-639"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73303.json"
  },
  "details": "Budibase is an open-source low-code platform. Prior to 3.40.0, POST /api/v2/email on account.budibase.app accepted a client-controlled accountId without binding it to the authenticated session, while checking only currentEmail. An authenticated attacker who obtains a victim account identifier can start the email-change workflow for the victim, receive and submit the verification code through POST /api/v2/email/verification, move the victim email to an attacker-controlled address, and complete a password reset as the victim. This issue is fixed in version 3.40.0.",
  "id": "CVE-2026-73303",
  "modified": "2026-09-10T03:30:17.062546150Z",
  "published": "2026-08-12T18:51:38.748Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/Budibase/budibase/releases/tag/3.40.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/Budibase/budibase/security/advisories/GHSA-c8vc-7pv3-g98p"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73303.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-73303"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Budibase: Email Change IDOR via POST /api/v2/email allows full Account Takeover (accountId not validated against session)"
}