CVE-2026-4880

Barcode Scanner (+Mobile App) <= 1.11.0 - Unauthenticated Privilege Escalation via Insecure Token Authentication

2026-04-15 11:13
0xd4rk5id3

Strategic Overview

Status
Patched in 1.12.0
Affected Plugin
Barcode Scanner (+Mobile App) – Inventory manager, Order fulfillment system, POS (Point of Sale)
Affected Version
<= 1.11.0
CVSS
9.8Critical
Weakness type
CWE-269 · Improper Privilege Management
CVE
CVE-2026-4880
View all Barcode Scanner (+Mobile App) – Inventory manager, Order fulfillment system, POS (Point of Sale) vulnerabilities

At a glance

CVE-2026-4880 is a critical-severity Improper Privilege Management vulnerability in the Barcode Scanner (+Mobile App) WordPress plugin, affecting versions <= 1.11.0. It carries a CVSS score of 9.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 1.12.0; sites on affected versions should update now. Disclosed April 2026, reported by 0xd4rk5id3.

Vulnerability Overview

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.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.

CWE-269: Improper Privilege Management

Barcode Scanner (+Mobile App) <= 1.11.0 carries this weakness at barcodeScannerConfigs, and reaching it takes no account at all. Improper privilege management means the code lets an account end up with capabilities its role should not have.

It converts a low-privileged account into an administrative one, which makes every other restriction on the site irrelevant. For Barcode Scanner (+Mobile App) the fix is 1.12.0: builds <= 1.11.0 are affected, anything from 1.12.0 onward is not.

Remediation

Update to version 1.12.0, or a newer patched version

How does WordSec protect against this?

This one needs no account at all, which puts it outside what login hardening can reach; WordSec's login security narrows the account-level paths around it, and the firewall is what inspects the request itself. None of that substitutes for the fix: Barcode Scanner (+Mobile App) 1.12.0 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-4880https://www.wordfence.com/threat-intel/vulnerabilities/id/a213e844-a0d3-4123-9f72-caef7702804chttps://nvd.nist.gov/vuln/detail/CVE-2026-4880

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C