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CVE Record

CVE-2026-55642: dbx: Unauthenticated arbitrary SQL execution in dbx-web (authentication fails open when no password is configured)

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.

CriticalCVSS 9.8Not KEV-listedUpdated
Glexia's TakeAutomated analysiscritical

Security readout for executives and security teams

Plain-English summary

Older dbx-web deployments may expose connected databases without authentication when no password is configured. A remote attacker could use dbx’s stored database access to read, alter, or delete data. The desktop Tauri application is not affected because it listens only on the local machine.

Executive priority

Prioritize immediate remediation for internet-facing or broadly reachable dbx-web instances. Upgrade to 0.5.51 or later and isolate affected services until verified. Investigate potentially exposed deployments because compromise could include data theft, unauthorized changes, or destructive database operations.

Technical view

Before version 0.5.51, dbx-web’s authentication middleware allows protected requests when password_hash is absent. Fresh deployments can enter this state when DBX_PASSWORD is unset and no stored password exists. Because dbx-web defaults to 0.0.0.0:4224, reachable attackers can access connection and SQL execution APIs without credentials.

Likely exposure

Exposure requires dbx-web earlier than 0.5.51, no configured or stored password, and network reachability to port 4224. Internet-facing or broadly accessible internal deployments are highest risk. Connected database permissions determine the possible impact. The loopback-only desktop Tauri application is excluded.

Exploitation context

The flaw is remotely reachable, requires no privileges or user interaction, and has low attack complexity. However, the supplied record is not in KEV and provides no evidence of active exploitation. Treat exposed qualifying deployments as urgent because successful access could compromise database confidentiality, integrity, and availability.

Researcher notes

This is CWE-306 with CVSS 3.1 score 9.8. The critical condition is a fail-open authentication path when password_hash is None, combined with the default all-interface listener. Impact is constrained by configured database accounts and their permissions. No active exploitation or public compromise evidence is established in the supplied sources.

Mitigation direction

  • Upgrade dbx-web to version 0.5.51 or later.
  • Until upgraded, restrict network access to dbx-web port 4224.
  • Configure a strong dbx-web password and verify authentication is enabled.
  • Limit configured database credentials to the minimum required privileges.
  • Check the vendor advisory for any additional remediation guidance.

Validation and detection

  • Inventory dbx-web deployments and record their installed versions.
  • Confirm whether DBX_PASSWORD or a stored password exists.
  • Verify port 4224 is not reachable from untrusted networks.
  • Confirm protected API requests require authentication after remediation.
  • Review dbx-web access and database audit logs for unexpected activity.
  • Verify desktop-only installations bind exclusively to loopback.
Prepared
Confidence
high
Sources
6

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · medium confidence lookup

CWE-306: Credential and account abuse lookup

Authentication and credential weaknesses can make valid-account abuse and credential telemetry useful review starting points. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
description · low confidence lookup

Credential and access behavior lookup

The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
description · low confidence lookup

Database behavior lookup

The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2026-55642 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Critical
CVSS
9.8 (3.1)
Known Exploited
No
Published

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

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
3Timeline events
1ADP providers
5Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: pocAutomatable: yesTechnical Impact: total

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
9.8CVSS 3.1CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9GitHub_M

Vulnerability scoring details

Base CVSS 3.1 score

9.8Critical
CVSS 3.1 vector shape for CVE-2026-55642Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
t8y2dbx< 0.5.51Listed
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-306 · source CWE mapping

Missing Authentication for Critical Functionality

Missing Authentication for Critical Functionality represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.