{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "26.9.1"
              },
              {
                "fixed": "26.8.1"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "DESCRIPTION"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "b6a92623554bb332d7564de19fbd9fdbc2d1d45e"
            }
          ],
          "repo": "https://github.com/arcadedata/arcadedb",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-2c8m-q484-jv7m"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-863"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93594.json"
  },
  "details": "ArcadeDB (Maven artifact com.arcadedb:arcadedb-engine) through 26.8.1 enforces its per-type/per-record access-control rules only in LocalBucket, keyed on file id. Query-execution paths that reach record data through LSM index files or the TimeSeries engine never invoke that permission check, so an authenticated user who is denied readRecord/deleteRecord on a type can still, with a single ordinary SQL statement, read the type's indexed key values and record IDs (e.g. SELECT key, rid FROM INDEX:Type[field]), read MAX/MIN values via the index shortcut, read and count TimeSeries samples, learn the type's record count, and delete index entries (DELETE FROM INDEX:Type[field]), which desynchronizes the index from the data and can defeat unique constraints. Index and type names needed for exploitation are discoverable because SELECT FROM schema:indexes is unfiltered. The issue affects both embedded and server deployments and all transports (HTTP, Bolt, Postgres, Gremlin) once a principal is bound. Fixed in 26.9.1.",
  "id": "CVE-2026-93594",
  "modified": "2026-09-20T11:30:53.311826820Z",
  "published": "2026-09-18T13:20:06.730Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-2c8m-q484-jv7m"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93594.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93594"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/arcadedb-before-26.9.1-acl-bypass-via-index-and-timeseries"
    }
  ],
  "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": "ArcadeDB before 26.9.1 ACL Bypass via Index and TimeSeries"
}