ukrsolution Barcode Scanner Plugin up to 1.11.0 on WordPress Authentication Token wp_capabilities privileges management

Summaryinfo

A vulnerability was found in ukrsolution Barcode Scanner Plugin up to 1.11.0 on WordPress and classified as critical. Affected by this vulnerability is the function wp_capabilities of the component Authentication Token Handler. Such manipulation leads to privileges management. This vulnerability is referenced as CVE-2026-4880. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in ukrsolution Barcode Scanner Plugin up to 1.11.0 on WordPress. It has been rated as critical. Affected by this issue is the function wp_capabilities of the component Authentication Token Handler. The manipulation with an unknown input leads to a privileges management vulnerability. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was published by Jude Nwadinobi. The advisory is available at wordfence.com. This vulnerability is handled as CVE-2026-4880 since 03/26/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 04/16/2026). This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• WordPress Plugin

Vendor

• ukrsolution

Name

• Barcode Scanner Plugin

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11.0

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CPE 2.2info

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