{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0.11.0"
              },
              {
                "fixed": "0.18.0"
              }
            ],
            "source": [
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "a42177bfc4acd27bb2f25372da9b3de467d6bcae"
            },
            {
              "fixed": "808e4b17ee821a8dac98bda5bf01da0fe1b69d41"
            },
            {
              "fixed": "aa7f9f1967b0bec806ac1156142267e805d70a55"
            }
          ],
          "repo": "https://github.com/ash-project/ash_typescript",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-6929-rjmh-4x62"
  ],
  "database_specific": {
    "cna_assigner": "EEF",
    "cwe_ids": [
      "CWE-863"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82730.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "9cade7661a01b6e4d940386f482f48d148dbb1e6"
          },
          {
            "fixed": "aa7f9f1967b0bec806ac1156142267e805d70a55"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "Incorrect Authorization vulnerability in ash-project ash_typescript allows an unauthorized RPC caller to read attribute values that Ash field policies denied.\n\nWhen a field policy denies an attribute, Ash substitutes %Ash.ForbiddenField{}, which retains the real value in original_value because embedded resources must remain writable, and hides it from Inspect rather than removing it. AshTypescript.Rpc.ResultProcessor strips these markers to nil on its template-driven paths, but normalize_primitive/1 in lib/ash_typescript/rpc/result_processor.ex had no such clause, so a marker fell through to the generic struct branch which calls Map.from_struct/1 and serializes every key, original_value included. The denied value is returned to the caller inside the marker that represents its own denial.\n\nThe simplest trigger is an action returning an embedded resource as a map, which routes through normalize_resource_struct/2 with an empty template. normalize_value_for_json/1 is a public, unguarded entry point to the same path.\n\nThis issue affects ash_typescript: from 0.11.0 before 0.18.0.",
  "id": "CVE-2026-82730",
  "modified": "2026-09-02T03:30:26.304051940Z",
  "published": "2026-09-01T02:09:01.851Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://cna.erlef.org/cves/CVE-2026-82730.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/EEF-CVE-2026-82730"
    },
    {
      "type": "WEB",
      "url": "https://repo.hex.pm"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82730.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/ash-project/ash_typescript/security/advisories/GHSA-6929-rjmh-4x62"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-82730"
    },
    {
      "type": "FIX",
      "url": "https://github.com/ash-project/ash_typescript/commit/aa7f9f1967b0bec806ac1156142267e805d70a55"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ash-project/ash_typescript"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Authorization-redacted field values disclosed through AshTypescript result normalization"
}