Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Plainware ShiftController Employee Shift Scheduling allows Stored XSS.This issue affects ShiftController Employee Shift Scheduling: from n/a through 4.9.64.

The ShiftController Employee Shift Scheduling plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via URL keys in all versions up to, and including, 4.9.66 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

The ShiftController Employee Shift Scheduling plugin is vulnerable to PHP Object Injection via deserialization of untrusted input via the `hc3_session`-cookie in versions up to, and including, 4.9.57. This makes it possible for an authenticated attacker with contributor access-level or above to inject a PHP Object. No POP chain is present in the vulnerable plugin. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.

Cross-Site Request Forgery (CSRF) vulnerability in plainware.Com ShiftController Employee Shift Scheduling plugin <= 4.9.23 versions.

Auth. (admin+) Stored Cross-Site Scripting (XSS) vulnerability in Plainware ShiftController Employee Shift Scheduling plugin <= 4.9.23 versions.

The ShiftController Employee Shift Scheduling plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the query string in versions up to, and including, 4.9.25 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.