The Freemius SDK, as used by hundreds of WordPress plugin and theme developers, was vulnerable to Cross-Site Request Forgery and Information disclosure due to missing capability checks and nonce protection on the _get_debug_log, _get_db_option, and the _set_db_option functions in versions up to, and including 2.4.2. Any WordPress plugin or theme running a version of Freemius less than 2.4.3 is vulnerable.

A lack of rate limiting in pjActionAJaxSend in Availability Booking Calendar 5.0 allows attackers to cause resource exhaustion.

Availability Booking Calendar 5.0 is vulnerable to Multiple HTML Injection issues via SMS API Key or Default Country Code.

A Cross Site Scripting vulnerability in Availability Booking Calendar 5.0 allows an attacker to inject JavaScript via the name, plugin_sms_api_key, plugin_sms_country_code, uuid, title, or country name parameter to index.php.

Availability Booking Calendar 5.0 allows CSV injection via the unique ID field in the Reservations list component.

Cross-Site Request Forgery (CSRF) vulnerability in Offshore Web Master Availability Calendar allows Cross Site Request Forgery.This issue affects Availability Calendar: from n/a through 1.2.6.

PHPJabbers Availability Booking Calendar 5.0 is vulnerable to User Account Takeover through username/password change.

PHP Jabbers Availability Booking Calendar 5.0 is vulnerable to Incorrect Access Control.

PHPJabbers Availability Booking Calendar 5.0 is vulnerable to Incorrect Access Control due to improper input validation of password parameter.

A vulnerability has been found in PHP Jabbers Availability Booking Calendar 5.0 and classified as problematic. Affected by this vulnerability is an unknown functionality of the file /index.php. The manipulation of the argument session_id leads to cross site scripting. The attack can be launched remotely. The identifier VDB-235957 was assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.