CVE-2026-9857: SASKAITA123 INVOICE123

Medium severity, CVSS 4.3. EPSS: 0.5% chance of exploitation in the next 30 days.

The Invoice123 plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.7.0. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to overwrite the plugin's API key stored in wp_options, modify invoice plugin settings, and alter WooCommerce tax rate data in the wp_woocommerce_tax_rates table.

Affected products

• SASKAITA123 INVOICE123: up to and including 1.7.0

Published 2026-07-10. Last modified 2026-07-10.