{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0.15.0"
              },
              {
                "fixed": "0.18.0"
              }
            ],
            "source": [
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "fb4cc367b85b68d90b99be692dcbbbfc248c1adb"
            },
            {
              "fixed": "808e4b17ee821a8dac98bda5bf01da0fe1b69d41"
            },
            {
              "fixed": "21ab6f1229a4dccdb56bc37ed437d9672a0c4a4e"
            }
          ],
          "repo": "https://github.com/ash-project/ash_typescript",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-f7fq-hwq6-jhvv"
  ],
  "database_specific": {
    "cna_assigner": "EEF",
    "cwe_ids": [
      "CWE-20"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82732.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "546a15e1a2d7dbf1df2d5a6ee4404bc3da87852e"
          },
          {
            "fixed": "21ab6f1229a4dccdb56bc37ed437d9672a0c4a4e"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "Improper Input Validation vulnerability in ash-project ash_typescript allows a remote attacker to submit argument values outside a declared allowlist or bound on typed-controller routes.\n\nAshTypescript.TypedController.RequestHandler in lib/ash_typescript/typed_controller/request_handler.ex calls Ash.Type.cast_input/3 and treats an {:ok, cast} result as fully validated. In Ash these are separate steps: cast_input/3 only coerces the term, while every constraint declared on the argument is applied by Ash.Type.apply_constraints/3, which this path never calls. Constraints such as one_of, max_length, min and max, and match are therefore inert, so a value outside a declared allowlist is accepted and passed to the route handler. Codegen renders the same constraints into the generated TypeScript types, so an allowlist appears enforced to a TypeScript caller while any other HTTP client ignores it. Empty-string to nil normalization also lives in apply_constraints, so the allow_nil?: false check accepts \"\" for a required argument.\n\nWhere a constraint gates a role, a status, or a sort direction, this becomes a privilege or state-machine bypass.\n\nThis issue affects ash_typescript: from 0.15.0 before 0.18.0.",
  "id": "CVE-2026-82732",
  "modified": "2026-09-02T03:30:25.648497125Z",
  "published": "2026-09-01T02:09:15.070Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://cna.erlef.org/cves/CVE-2026-82732.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/EEF-CVE-2026-82732"
    },
    {
      "type": "WEB",
      "url": "https://repo.hex.pm"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82732.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/ash-project/ash_typescript/security/advisories/GHSA-f7fq-hwq6-jhvv"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-82732"
    },
    {
      "type": "FIX",
      "url": "https://github.com/ash-project/ash_typescript/commit/21ab6f1229a4dccdb56bc37ed437d9672a0c4a4e"
    },
    {
      "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:N/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Declared argument constraints not enforced on AshTypescript typed controller routes"
}