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dbx: Unauthenticated arbitrary SQL execution in dbx-web (authentication fails open when no password is configured)

Type: advisorySources: OSV

dbx is a cross-platform database client for databases. Prior to 0.5.51, dbx-web auth_middleware in crates/dbx-web/src/auth.rs passes every protected request to the handler chain when password_hash is None. A fresh deployment reaches that state when DBX_PASSWORD is unset and no stored password exists, while crates/dbx-web/src/main.rs binds the service to 0.0.0.0 on port 4224 by default. An unauthenticated network attacker can call the /api/connection/connect and /api/query/execute routes to use configured database credentials and execute arbitrary SQL, allowing disclosure, modification, or destruction of data in connected databases. The desktop Tauri application is not affected because it binds only to loopback. This issue is fixed in version 0.5.51.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-55642
Confirmed fixed CVEs
Not specified
Updated in this feed
8 Nov 2026, 01:45 UTC · Revision 1

Source evidence

dbx: Unauthenticated arbitrary SQL execution in dbx-web (authentication fails open when no password is configured)

core-osv · Original source

Published 20 Aug 2026, 16:38 UTC

dbx is a cross-platform database client for databases. Prior to 0.5.51, dbx-web auth_middleware in crates/dbx-web/src/auth.rs passes every protected request to the handler chain when password_hash is None. A fresh deployment reaches that state when DBX_PASSWORD is unset and no stored password exists, while crates/dbx-web/src/main.rs binds the service to 0.0.0.0 on port 4224 by default. An unauthenticated network attacker can call the /api/connection/connect and /api/query/execute routes to use configured database credentials and execute arbitrary SQL, allowing disclosure, modification, or destruction of data in connected databases. The desktop Tauri application is not affected because it binds only to loopback. This issue is fixed in version 0.5.51.

osv:CVE-2026-55642
Complete source record
{
  "id": "64265df017ad3e08e36d18360918fa22123f5c845fcb1f9d3b665d54f804cd3e",
  "url": "https://osv.dev/vulnerability/CVE-2026-55642",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "dbx: Unauthenticated arbitrary SQL execution in dbx-web (authentication fails open when no password is configured)",
    "summary": "dbx is a cross-platform database client for databases. Prior to 0.5.51, dbx-web auth_middleware in crates/dbx-web/src/auth.rs passes every protected request to the handler chain when password_hash is None. A fresh deployment reaches that state when DBX_PASSWORD is unset and no stored password exists, while crates/dbx-web/src/main.rs binds the service to 0.0.0.0 on port 4224 by default. An unauthenticated network attacker can call the /api/connection/connect and /api/query/execute routes to use configured database credentials and execute arbitrary SQL, allowing disclosure, modification, or destruction of data in connected databases. The desktop Tauri application is not affected because it binds only to loopback. This issue is fixed in version 0.5.51.",
    "evidence": "osv:CVE-2026-55642",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2026-55642",
      "aliases": [
        "CVE-2026-55642",
        "GHSA-rqp4-8fxh-22vh"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/t8y2/dbx",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "e249925a7dff1d3f2908f77dd6ee3ba8223ab306"
                },
                {
                  "fixed": "fb919efe0a62869631f49242d1f4fe8d41718c2a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.5.51"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "fb919efe0a62869631f49242d1f4fe8d41718c2a"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "e249925a7dff1d3f2908f77dd6ee3ba8223ab306"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v0.5.51"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.5.50",
            "packages-v0.4.23",
            "v0.5.49",
            "agents-v0.2.47",
            "packages-v0.4.22",
            "v0.5.47",
            "v0.5.46",
            "agents-v0.2.45",
            "packages-v0.4.21",
            "v0.5.45",
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            "packages-v0.4.20",
            "agents-v0.2.43",
            "v0.5.44",
            "packages-v0.4.19",
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            "agents-v0.2.42",
            "agents-v0.2.41",
            "v0.5.42",
            "packages-v0.4.18",
            "agents-v0.2.40",
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            "v0.5.41",
            "agents-v0.2.39",
            "agents-v0.2.38",
            "packages-v0.4.16",
            "v0.5.40",
            "packages-v0.4.15",
            "v0.5.39",
            "agents-v0.2.37",
            "packages-v0.4.14",
            "agents-v0.2.36",
            "v0.5.38",
            "agents-v0.2.35",
            "packages-v0.4.13",
            "v0.5.37",
            "packages-v0.4.12",
            "v0.5.36",
            "packages-v0.4.11",
            "v0.5.35",
            "v0.5.34",
            "packages-v0.4.10",
            "v0.5.33",
            "packages-v0.4.9",
            "v0.5.32",
            "packages-v0.4.8",
            "v0.5.31",
            "packages-v0.4.7",
            "v0.5.30",
            "packages-v0.4.6",
            "v0.5.29",
            "v0.5.28",
            "v0.5.27",
            "packages-v0.4.5",
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            "v0.5.22",
            "v0.5.21",
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            "v0.5.19",
            "v0.5.18",
            "v0.5.17",
            "v0.5.16",
            "v0.5.15",
            "v0.5.14",
            "v0.5.13",
            "v0.5.12",
            "v0.5.11",
            "packages-v0.4.3",
            "mcp-v0.4.2",
            "v0.5.10",
            "mcp-v0.4.1",
            "v0.5.9",
            "v0.5.8",
            "v0.5.7",
            "v0.5.6",
            "v0.5.5",
            "v0.5.4",
            "v0.5.3",
            "v0.5.2",
            "v0.5.1",
            "v0.5.0",
            "v0.4.3",
            "v0.4.2",
            "v0.4.1",
            "v0.4.0",
            "v0.3.10",
            "v0.3.9",
            "v0.3.8",
            "v0.3.7",
            "v0.3.6",
            "v0.3.5",
            "v0.3.4",
            "v0.3.3",
            "v0.3.2",
            "v0.3.1",
            "v0.3.0",
            "v0.2.1",
            "v0.2.0",
            "v0.1.1",
            "v0.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55642.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:52.658242028Z",
      "provider": "osv",
      "references": [
        "https://github.com/t8y2/dbx/releases/tag/v0.5.51",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55642.json",
        "https://github.com/t8y2/dbx/security/advisories/GHSA-rqp4-8fxh-22vh",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-55642",
        "https://github.com/t8y2/dbx/issues/2887",
        "https://github.com/t8y2/dbx/commit/fb919efe0a62869631f49242d1f4fe8d41718c2a"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-306"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55642.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-55642",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 521476,
  "published_at": "2026-08-20T16:38:29.732+00:00"
}