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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-55642
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-20 17:18:27 UTC
Updated2026-08-20 20:17:35 UTC
Descriptiondbx 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.

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.003720000 probability, percentile 0.305830000 (date 2026-08-22)

Problem Types: CWE-306 | CWE-306 CWE-306: Missing Authentication for Critical Function

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA T8y2 Dbx affected < 0.5.51 Not specified

References

ReferenceSourceLinkTags
github.com/t8y2/dbx/security/advisories/GHSA-rqp4-8fxh-22vh 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
github.com/t8y2/dbx/commit/fb919efe0a62869631f49242d1f4fe8d41718c2a [email protected] github.com
github.com/t8y2/dbx/releases/tag/v0.5.51 [email protected] github.com
github.com/t8y2/dbx/issues/2887 [email protected] github.com
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