{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0.4.0"
              },
              {
                "fixed": "3.32.2"
              }
            ],
            "source": [
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "c776da9237e3c407ba966075f04084a36750d9e4"
            },
            {
              "fixed": "c4505a40d1f28ddb6a82fa7c12955d511f01d479"
            },
            {
              "fixed": "912e243196017c2a812c25905c2b1cc3bbb843fc"
            }
          ],
          "repo": "https://github.com/ash-project/ash",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-92x7-q3h5-wf88"
  ],
  "database_specific": {
    "cna_assigner": "EEF",
    "cwe_ids": [
      "CWE-284"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82745.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "6dc699d8a683d542812b34a8c104cc90164add3a"
          },
          {
            "fixed": "912e243196017c2a812c25905c2b1cc3bbb843fc"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "Improper Access Control vulnerability in ash-project ash lets a create action overwrite an existing record when the ETS or Mnesia data layer is used, because neither enforced primary-key uniqueness on insert.\n\nUnlike a SQL data layer, whose unique primary-key constraint rejects a duplicate, the ETS and Mnesia data layers implemented create as a keyed insert that replaces any existing entry with the same primary key (lib/ash/data_layer/ets/ets.ex, lib/ash/data_layer/mnesia/mnesia.ex). An actor who can set the primary key on a create (for example a user-supplied string or integer key) can submit a create whose key matches an existing record and silently overwrite it, destroying and replacing another entity's data without going through the update action or its policies. The fix rejects a create whose primary key already exists with an already-taken error, and only allows duplicates for keyless resources.\n\nThis issue affects ash: from 0.4.0 before 3.32.2.",
  "id": "CVE-2026-82745",
  "modified": "2026-09-04T11:30:57.972761950Z",
  "published": "2026-09-01T03:42:28.309Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://cna.erlef.org/cves/CVE-2026-82745.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/EEF-CVE-2026-82745"
    },
    {
      "type": "WEB",
      "url": "https://repo.hex.pm"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82745.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/ash-project/ash/security/advisories/GHSA-92x7-q3h5-wf88"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-82745"
    },
    {
      "type": "FIX",
      "url": "https://github.com/ash-project/ash/commit/912e243196017c2a812c25905c2b1cc3bbb843fc"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ash-project/ash"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "ETS and Mnesia data layers overwrite an existing record on create instead of enforcing primary-key uniqueness"
}