CVE-2026-18666: Unknown Library Management System

Medium severity, CVSS 4.3. EPSS: 0.3% chance of exploitation in the next 30 days.

The Library Management System WordPress plugin before 3.6.7 does not sanitize and escape a user-supplied parameter before using it in a SQL statement, allowing users with a role as low as Subscriber to perform SQL injection and extract arbitrary data from the database, including user password hashes.

Affected products

• Unknown Library Management System: before 3.6.7 (fixed in 3.6.7)

Published 2026-08-10. Last modified 2026-08-26.