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Vulnerability record · CVE-2026-55642 · published 20 August 2026

CVE-2026-55642: Missing authentication for critical function vulnerability

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.

9.8 CVSS 3.1 Critical EPSS 0.69% · top 49.2% CWE-306 · Missing authentication for critical function Deferred
9.8CVSS 3.1 base score
0.69%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
5References
18 Sep 2026Last modified by NVD

Description

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.

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

References

LinkTags
https://github.com/t8y2/dbx/commit/fb919efe0a62869631f49242d1f4fe8d41718c2a
https://github.com/t8y2/dbx/issues/2887
https://github.com/t8y2/dbx/releases/tag/v0.5.51
https://github.com/t8y2/dbx/security/advisories/GHSA-rqp4-8fxh-22vh
https://github.com/t8y2/dbx/security/advisories/GHSA-rqp4-8fxh-22vh

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Source: NIST National Vulnerability Database (record CVE-2026-55642), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.