CVE-2023-3077: Inspireui Mstore API

Critical severity, CVSS 9.8. EPSS: 5.5% chance of exploitation in the next 30 days.

The MStore API WordPress plugin before 3.9.8 does not sanitise and escape a parameter before using it in a SQL statement, leading to a Blind SQL injection exploitable by unauthenticated users. This is only exploitable if the site owner elected to pay to get access to the plugins' pro features, and uses the woocommerce-appointments plugin.

Affected products

• Inspireui Mstore API: before 3.9.8 (fixed in 3.9.8)

Published 2023-07-10. Last modified 2026-06-17.