{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "26.8.1"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "DESCRIPTION"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "87bdc67f1f0331fa2d07e932a550064c118eae70"
            }
          ],
          "repo": "https://github.com/arcadedata/arcadedb",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-c23x-pqcj-7hfm"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-862"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75850.json"
  },
  "details": "ArcadeDB before 26.8.1 fails to bind the authenticated principal (setCurrentUser) on its batch and time-series HTTP handlers. Because no principal is bound on the worker thread, the engine's fine-grained per-type ACL layer (LocalBucket.checkPermissionsOnFile) does not execute for these handlers. In deployments that use per-type or per-group ACLs, a user with database access but only limited per-type permissions can read from and write to types they are not authorized to access by submitting requests to the batch/time-series endpoints. Deployments that rely solely on database-level access control are not affected.",
  "id": "CVE-2026-75850",
  "modified": "2026-09-10T03:30:42.321792828Z",
  "published": "2026-08-18T11:19:54.194Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-c23x-pqcj-7hfm"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75850.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-75850"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/arcadedb-before-per-type-acl-bypass-via-batch-handlers"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "ArcadeDB before 26.8.1 Per-Type ACL Bypass via Batch Handlers"
}