{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "0.6.0"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "224f21354a916dfbec29e9435db1045b3d61a94b"
            }
          ],
          "repo": "https://github.com/maybe-finance/maybe",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-862"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63100.json"
  },
  "details": "Maybe through 0.6.0 contains a missing authorization vulnerability that allows authenticated low-privilege member-role users to access and modify global hosting settings by exploiting unprotected show and update actions in the Settings::HostingsController, where the before_action ensure_admin filter is applied only to the clear_cache action. Attackers can read the operator's Synth API key rendered in plaintext via a form field value attribute, overwrite it with an attacker-controlled value, toggle public registration settings, and disable email confirmation requirements to disrupt the entire instance.",
  "id": "CVE-2026-63100",
  "modified": "2026-07-22T05:29:53.290138311Z",
  "published": "2026-07-17T15:45:05.695Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63100.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63100"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/maybe-missing-authorization-via-hostingscontroller-show-update"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/maybe-finance/maybe"
    },
    {
      "type": "EVIDENCE",
      "url": "https://github.com/geo-chen/oss/blob/main/maybe.md"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Maybe 0.6.0 Missing Authorization via HostingsController show/update"
}