Vulnerability · Published Apr 15, 2026 · Assigned by Wordfence
CVE-2026-4880Barcode Scanner (+Mobile App) <= 1.11.0 - Unauthenticated Privilege Escalation via Insecure Token Authentication
Critical 9.8
In plain English
A critical-severity privilege mismanagement in Barcode Scanner (+Mobile App) – Inventory manager, Order fulfillment system, POS (Point of Sale) from ukrsolution. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities).
Official description
The Barcode Scanner (+Mobile App) – Inventory manager, Order fulfillment system, POS (Point of Sale) plugin for WordPress is vulnerable to privilege escalation via insecure token-based authentication in all versions up to, and including, 1.11.0. This is due to the plugin trusting a user-supplied Base64-encoded user ID in the token parameter to identify users, leaking valid authentication tokens through the 'barcodeScannerConfigs' action, and lacking meta-key restrictions on the 'setUserMeta' action. This makes it possible for unauthenticated attackers to escalate their privileges to that of an administrator by first spoofing the admin user ID to leak their authentication token, then using that token to update any user's 'wp_capabilities' meta to gain full administrative access.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| ukrsolution | Barcode Scanner (+Mobile App) – Inventory manager, Order fulfillment system, POS (Point of Sale) | 0 – through 1.11.0 |
Weakness: CWE-269 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/a213e844-a0d3-4123-9f72-caef7702804c?source=cve
- https://plugins.trac.wordpress.org/browser/barcode-scanner-lite-pos-to-manage-products-inventory-and-orders/trunk/src/Core.php?rev=3391688#L498
- https://plugins.trac.wordpress.org/changeset/3506824/barcode-scanner-lite-pos-to-manage-products-inventory-and-orders#file30