Build App Online <= 1.0.23 - Missing Authorization to Arbitrary Post Author Modification via 'build-app-online-update-vendor-product' AJAX Action
Summary
| CVE | CVE-2026-3651 |
|---|---|
| State | PUBLISHED |
| Assigner | Wordfence |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-03-21 04:17:34 UTC |
| Updated | 2026-04-24 16:27:44 UTC |
| Description | The Build App Online plugin for WordPress is vulnerable to unauthorized access in all versions up to, and including, 1.0.23. This is due to the plugin registering the 'build-app-online-update-vendor-product' AJAX action via wp_ajax_nopriv_ without proper authentication checks, capability verification, or nonce validation in the update_vendor_product() function. The function accepts a user-supplied post ID from the request and calls wp_update_post() to modify the post_author field without validating whether the user has permission to modify the specified post. This makes it possible for unauthenticated attackers to modify the post_author of arbitrary posts to 0 (orphaning posts from their legitimate authors), or for authenticated attackers to claim ownership of any post by setting themselves as the author. |
Risk And Classification
Primary CVSS: v3.1 5.3 MEDIUM from [email protected]
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Problem Types: CWE-862 | CWE-862 CWE-862 Missing Authorization
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 5.3 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
| 3.1 | CNA | DECLARED | 5.3 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
LowAvailability
NoneCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Hakeemnala | Build App Online | affected 1.0.23 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| plugins.trac.wordpress.org/browser/build-app-online/tags/1.0.23/includes/class-build-app... | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/build-app-online/tags/1.0.23/admin/class-build-app-on... | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/build-app-online/trunk/admin/class-build-app-online-a... | [email protected] | plugins.trac.wordpress.org | |
| www.wordfence.com/threat-intel/vulnerabilities/id/51564b26-0d7c-4499-9f5a-84f76... | [email protected] | www.wordfence.com | |
| plugins.trac.wordpress.org/browser/build-app-online/trunk/admin/class-build-app-online-a... | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/build-app-online/trunk/includes/class-build-app-onlin... | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/build-app-online/tags/1.0.23/admin/class-build-app-on... | [email protected] | plugins.trac.wordpress.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Ronnachai Sretawat Na Ayutaya (en)
CNA: Ronnachai Chaipha (en)
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2026-03-20T15:10:32.000Z | Disclosed |
There are currently no legacy QID mappings associated with this CVE.