dbcve.org
Build App OnlineWordPress extension · Buildapp

CVE-2023-51478

CRITICAL · 9.8 CVSS v3.1 Published 2024-04-25
Fix available
A fix is available. Upgrade to 1.0.20 or later.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Improper Authentication vulnerability in Abdul Hakeem Build App Online allows Privilege Escalation.This issue affects Build App Online: from n/a through 1.0.19.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

Improper authentication in Build App Online versions up to 1.0.19 allows attackers to bypass authentication mechanisms and escalate privileges to gain unauthorized administrative access to the application.

MitigationUpgrade Build App Online to a patched version beyond 1.0.19 and implement proper authentication controls including strong session management and validation of user credentials at all privileged endpoints.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Build App OnlineWordPress extension
Affected:< 1.0.20

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
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

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify installed Build App Online version
    Check the application version displayed in the software UI, or inspect the build/version file in the application installation directory, or query the application's /version or /about endpoint if available
    Affected if The installed version is 1.0.19 or lower, or if the version cannot be determined and the application is Build App Online
  2. Verify admin endpoint access controls
    Attempt to access administrative functions or privileged API endpoints (such as /admin, /settings, or user management routes) without providing valid authentication credentials
    Affected if Administrative endpoints are accessible without authentication or a valid session token
  3. Test authentication bypass mechanisms
    Submit requests to protected endpoints with modified or missing authentication headers/session cookies, and observe if the application grants access despite lacking valid credentials
    Affected if The application grants access to privileged operations without proper authentication validation
  4. Inspect session management configuration
    Review application configuration files for session timeout settings, token validation logic, and whether authentication checks are consistently enforced across all privileged endpoints
    Affected if Session tokens are not validated, or authentication checks are missing or disabled on administrative functions

The environment is affected if Build App Online version 1.0.19 or lower is installed, or if administrative endpoints can be accessed without valid authentication credentials.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 1.0.20 or later
Fixed in 1.0.20
Interim mitigation

Upgrade Build App Online to a patched version beyond 1.0.19 and implement proper authentication controls including strong session management and validation of user credentials at all privileged endpoints.

Recommended fix Moderate confidence

1.0.20

  1. Verify current Build App Online version is below 1.0.20 by accessing the application admin panel or checking the application files
  2. Create a complete backup of the application database and all application files
  3. Download Build App Online version 1.0.20 from the official source or vendor repository
  4. Replace all existing application files with the new version 1.0.20 files
  5. Run any database migrations if included in the update
  6. Verify the application is functioning correctly after the upgrade
  7. Confirm the authentication vulnerability is resolved by testing login and privilege escalation scenarios

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Build App Online Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA4.0 h
22.0 hours of engineering $3,860
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,176.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2023-51478 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data