WordPress Plugin Advanced Booking Calendar is prone to an SQL injection vulnerability because it fails to sufficiently sanitize user-supplied data before using it in an SQL query. Exploiting this issue could allow an attacker to compromise the application, access or modify data, or exploit latent vulnerabilities in the underlying database. WordPress Plugin Advanced Booking Calendar version 1.6.1 is vulnerable; prior versions may also be affected.
Update to plugin version 1.6.2 or latest
WordPress Plugin Count per Day 'userperspan.php' Multiple Cross-Site Scripting Vulnerabilities (3.1.1)
WordPress Plugin Related Posts Lite Security Bypass (1.1)
Apache 2.x version older than 2.0.45
WordPress 4.5.x PHP Object Injection (4.5 - 4.5.23)