ArcadeDB MongoDB wire protocol authentication bypass cross-database

{
  "id": "02239fed50899b5592c06e33601f9e8be9fe4162212dd54b0dd58ced3ab86dbf",
  "url": "https://osv.dev/vulnerability/CVE-2026-75852",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ArcadeDB MongoDB wire protocol authentication bypass cross-database",
    "summary": "ArcadeDB versions before 26.8.1 fail to enforce SASL authentication on data commands in the MongoDB wire-protocol plugin. Unauthenticated attackers can issue insert, find, update, delete, and create commands against any database by connecting to port 27017 without credentials.",
    "evidence": "osv:CVE-2026-75852",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2026-75852",
      "aliases": [
        "CVE-2026-75852",
        "GHSA-fq9c-x968-g278"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/arcadedata/arcadedb",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "87bdc67f1f0331fa2d07e932a550064c118eae70"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "26.8.1"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "26.8.1"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "untagged-3026f5635164cd300b5b",
            "26.7.2",
            "26.7.1",
            "26.6.1",
            "26.5.1",
            "26.4.2",
            "26.3.2",
            "26.3.1",
            "26.2.1",
            "26.1.1",
            "25.12.1",
            "25.11.1",
            "25.10.1",
            "25.9.1",
            "25.8.1",
            "25.7.1",
            "25.6.1",
            "25.4.1",
            "25.3.2",
            "25.3.1",
            "25.2.1",
            "25.1.1",
            "24.11.2",
            "24.11.1",
            "24.10.1",
            "24.6.1",
            "24.5.1",
            "24.4.1",
            "24.2.1",
            "24.1.1",
            "23.12.2",
            "23.12.1",
            "23.11.1",
            "23.10.1",
            "23.9.1",
            "23.7.1",
            "23.6.1",
            "23.5.1",
            "23.4.1",
            "23.3.1",
            "23.2.1",
            "23.1.2",
            "23.1.1",
            "22.12.1",
            "22.11.1",
            "22.10.1",
            "22.9.1",
            "22.8.1",
            "22.6.1",
            "22.2.1",
            "22.1.3",
            "22.1.2",
            "21.12.1",
            "21.11.1",
            "21.10.2",
            "21.10.1",
            "21.9.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-75852.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:51.401758595Z",
      "provider": "osv",
      "references": [
        "https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-fq9c-x968-g278",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75852.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-75852",
        "https://www.vulncheck.com/advisories/arcadedb-mongodb-wire-protocol-authentication-bypass-cross-database"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-306"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75852.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-75852",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 520062,
  "published_at": "2026-08-18T11:19:55.908+00:00"
}