{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0.4.1"
              },
              {
                "fixed": "0.7.1"
              }
            ],
            "source": [
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "24e3c61e63258bfd9592ccc5a51a3d7148699914"
            },
            {
              "fixed": "cfe94c67484270db0f46384bd35cf1fbad8793d5"
            },
            {
              "fixed": "865fdd4e5e70724a23b19c048e6768c31d2209ab"
            }
          ],
          "repo": "https://github.com/ash-project/ash_sql",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-8v9m-8pxv-738c"
  ],
  "database_specific": {
    "cna_assigner": "EEF",
    "cwe_ids": [
      "CWE-863"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77454.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "e26a63b29bd7501505fafd726f14262cdc3b6629"
          },
          {
            "fixed": "865fdd4e5e70724a23b19c048e6768c31d2209ab"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "Incorrect Authorization vulnerability in ash-project ash_sql allows a caller to bypass a scoping or authorization filter expressed as exists/2 over a relationship that declares both a limit (or from_many?) and a parent(...)-referencing filter or sort.\n\nAshSql.Join.related_query/3 skips the caller-supplied exists predicate for such relationships and delegates it to limit_from_many/5. When the relationship's own filter or sort references parent(...), limit_from_many/5 takes a branch that drops both the limit and the predicate, emitting a bare correlated EXISTS with no predicate. The check then matches any record that has any related row. Most severely, when the expression backs a policy (for example authorize_if expr(exists(memberships, user_id == ^actor(:id)))), the actor-scoping condition disappears and the policy passes for any actor with any related row.\n\nThis issue affects ash_sql: from 0.4.1 before 0.7.1.",
  "id": "CVE-2026-77454",
  "modified": "2026-09-03T03:30:53.708105535Z",
  "published": "2026-08-30T12:01:23.862Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://cna.erlef.org/cves/CVE-2026-77454.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/EEF-CVE-2026-77454"
    },
    {
      "type": "WEB",
      "url": "https://repo.hex.pm"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77454.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/ash-project/ash_sql/security/advisories/GHSA-8v9m-8pxv-738c"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-77454"
    },
    {
      "type": "FIX",
      "url": "https://github.com/ash-project/ash_sql/commit/865fdd4e5e70724a23b19c048e6768c31d2209ab"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ash-project/ash_sql"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "exists/2 predicate silently dropped on limited relationships with a parent() filter in AshSql"
}