CVE-2026-4880 Barcode Scanner (+Mobile App) <= 1.11.0 - Unauthenticated Privilege Escalation via Insecure Token Authentication
Unauthenticated attackers can escalate privileges to administrator by spoofing user IDs to leak tokens and modifying capabilities in the Barcode Scanner WordPress plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-4880?
CVE-2026-4880 is a critical vulnerability in ukrsolution Barcode Scanner (+Mobile App) – Inventory manager, Order fulfillment system, POS (Point of Sale), published on 15 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Weakness: CWE-269
Which versions are affected by CVE-2026-4880?
How do I fix CVE-2026-4880?
No fix has been published for CVE-2026-4880 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-4880 being exploited?
There is no known exploitation of CVE-2026-4880 in the wild and no public exploit code.
Sources
Also known as GHSA-p8x8-wgf2-jrjm.