{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "1.4.0"
              },
              {
                "fixed": "1.11.0"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "cb2296922d48705a7bbabd92daa1ec240cab1e66"
            },
            {
              "fixed": "4e2c5476ecfd2c701488627ee46e6eefc58c982e"
            }
          ],
          "repo": "https://github.com/ash-project/ash_graphql",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-j684-hch4-q888"
  ],
  "database_specific": {
    "cna_assigner": "EEF",
    "cwe_ids": [
      "CWE-863"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/81xxx/CVE-2026-81643.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "3cb2c9870d050c7c4bba6c211aaed97d732f7e81"
          },
          {
            "fixed": "e8e67f39add2ce0771e6db5f086afe68ba212c57"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "Incorrect Authorization vulnerability in ash-project ash_graphql delivers GraphQL subscription payloads for records a subscriber is not authorized to see.\n\nIn AshGraphql.Subscription.Batcher, do_send/5 resolves the first notification of a batch and filters it with should_send?/1, which drops results whose errors are coded forbidden or not_found or carry no code, precisely so that unauthorized results are not disclosed. The remaining notifications in the batch are read from the process dictionary, re-run through the pipeline, and appended to the outgoing results without that filter. They reach pubsub.publish_subscription/2, and the not is_nil(record) guard drops only nil records, not error-carrying results. Any two qualifying notifications arriving within the default one-second batch interval suffice, and batching is the default path. The fix applies should_send?/1 to the whole batch.\n\nThis issue affects ash_graphql: from 1.4.0 before 1.11.0.",
  "id": "CVE-2026-81643",
  "modified": "2026-08-31T03:30:40.404140604Z",
  "published": "2026-08-30T18:20:35.564Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://cna.erlef.org/cves/CVE-2026-81643.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/81xxx/CVE-2026-81643.json"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ash-project/ash_graphql"
    },
    {
      "type": "FIX",
      "url": "https://github.com/ash-project/ash_graphql/commit/e8e67f39add2ce0771e6db5f086afe68ba212c57"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/ash-project/ash_graphql/security/advisories/GHSA-j684-hch4-q888"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-81643"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/EEF-CVE-2026-81643"
    },
    {
      "type": "WEB",
      "url": "https://repo.hex.pm"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Broken access control in AshGraphql subscription batcher applies authorization suppression to only the first notification"
}