{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "1.4.0"
              },
              {
                "fixed": "1.11.0"
              }
            ],
            "source": [
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "cb2296922d48705a7bbabd92daa1ec240cab1e66"
            },
            {
              "fixed": "4e2c5476ecfd2c701488627ee46e6eefc58c982e"
            },
            {
              "fixed": "6e30b8b5a04bdeaed5d7514caa6b2d056d8d993e"
            }
          ],
          "repo": "https://github.com/ash-project/ash_graphql",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-rcqc-59g2-gjg2"
  ],
  "database_specific": {
    "cna_assigner": "EEF",
    "cwe_ids": [
      "CWE-863"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80223.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "4c377e541a2adb6befc651f3dccc6a797bc58ba9"
          },
          {
            "fixed": "6e30b8b5a04bdeaed5d7514caa6b2d056d8d993e"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "Incorrect Authorization vulnerability in ash-project ash_graphql allows an authenticated subscriber in one tenant to receive another tenant's records over GraphQL subscriptions.\n\nThe subscription resolver in AshGraphql.Graphql.Resolver authorizes each notification payload in memory: its fast path calls Ash.can/3 with run_queries?: false, which evaluates the read policy filter against the in-memory record via Ash.Expr.eval/2 and never issues a query. Ash applies multitenancy at query-build and data-layer-prefix time, not inside query.filter, so the evaluated policy carries no tenant condition and a tenant-B notification routed to a tenant-A subscriber is emitted whenever the policy filter is true. The single-notification clause has no tenant guard at all, and the batched clause checks only the head of the notification list, so non-head entries authorize purely in memory. A tenant-scoped read is reached only when filter evaluation fails.\n\nThis issue affects ash_graphql: from 1.4.0 before 1.11.0.",
  "id": "CVE-2026-80223",
  "modified": "2026-09-02T03:30:21.799357701Z",
  "published": "2026-08-30T18:27:09.440Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://cna.erlef.org/cves/CVE-2026-80223.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/EEF-CVE-2026-80223"
    },
    {
      "type": "WEB",
      "url": "https://repo.hex.pm"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80223.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/ash-project/ash_graphql/security/advisories/GHSA-rcqc-59g2-gjg2"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80223"
    },
    {
      "type": "FIX",
      "url": "https://github.com/ash-project/ash_graphql/commit/6e30b8b5a04bdeaed5d7514caa6b2d056d8d993e"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ash-project/ash_graphql"
    }
  ],
  "schema_version": "1.9.0",
  "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": "Cross-tenant subscription disclosure in AshGraphql authorizes notifications in memory without a tenant-scoped read"
}