{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "12.128.2"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6685e5f11adef257bf3d085e481f4d8ebcec602e"
            }
          ],
          "repo": "https://github.com/Cap-go/capgo.app",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-fmm3-3qcg-85j6"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-203"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56296.json"
  },
  "details": "Cap-go before 12.128.2 contains an information disclosure vulnerability in the public.transfer_app RPC function that returns distinct error messages for existing versus non-existing app IDs. Unauthenticated attackers can enumerate valid app IDs by observing error message differences when calling transfer_app with only the publishable API key.",
  "id": "CVE-2026-56296",
  "modified": "2026-08-04T11:30:48.097858773Z",
  "published": "2026-07-11T13:00:57.100Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56296.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/Cap-go/capgo/security/advisories/GHSA-fmm3-3qcg-85j6"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56296"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/cap-go-app-existence-oracle-via-unauthenticated-transfer-app-rpc"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Cap-go - App Existence Oracle via Unauthenticated transfer_app RPC"
}