The VikBooking Hotel Booking Engine & PMS WordPress plugin before 1.8.15 does not restrict the type of files unauthenticated visitors may attach to its live chat, nor sanitize their contents, allowing them to store active content which is executed in the context of an administrator viewing the conversation.

The VikBooking Hotel Booking Engine & PMS plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'vbfX' parameter in all versions up to, and including, 1.8.13 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The vbfX custom-field value is stored via the public-facing saveorder task, which has no capability or authentication check enforced by default, enabling fully unauthenticated submission of malicious payloads.

Missing Authorization vulnerability in e4jvikwp VikBooking Hotel Booking Engine & PMS vikbooking.This issue affects VikBooking Hotel Booking Engine & PMS: from n/a through <= 1.8.2.

The VikBooking Hotel Booking Engine & PMS WordPress plugin before 1.7.2 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfilteredhtml capability is disallowed (for example in multisite setup).

The VikBooking Hotel Booking Engine & PMS plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.7.2. This is due to missing or incorrect nonce validation on the 'save' function. This makes it possible for unauthenticated attackers to change plugin access privileges via a forged request granted they can trick a site administrator into performing an action such as clicking on a link. Successful exploitation allows attackers with subscriber-level privileges and above to upload arbitrary files on the affected site's server which may make remote code execution possible.

The VikBooking Hotel Booking Engine & PMS WordPress plugin before 1.6.8's access control mechanism fails to properly restrict access to its settings, permitting any users that can access a menu to manipulate requests and perform unauthorized actions such as editing, renaming or deleting (categories for example) despite initial settings prohibiting such access. This vulnerability resembles broken access control, enabling unauthorized users to modify critical VikBooking Hotel Booking Engine & PMS WordPress plugin before 1.6.8 configurations.

The VikBooking Hotel Booking Engine & PMS WordPress plugin before 1.6.8 allows direct access to menus, allowing an authenticated user with subscriber privileges or above, to bypass authorization and access settings of the VikBooking Hotel Booking Engine & PMS WordPress plugin before 1.6.8's they shouldn't be allowed to.