What the vulnerability does
01Description
The Online Booking & Scheduling Calendar for WordPress by vcita plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'business_id' parameter in versions up to, and including, 4.3.0 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.
Explanation of Vulnerability in Simple Terms
02Summary
The vcita Online Booking & Scheduling Calendar plugin for WordPress versions 4.3.0 and earlier contains a stored cross-site scripting (XSS) vulnerability. An attacker can inject malicious JavaScript that executes in the browsers of site visitors and administrators. The vulnerability affects the plugin's core functionality and can impact all users who interact with the booking calendar.
What an attacker can do
03Attacker Capabilities
Inject malicious JavaScript that runs in visitors' browsers, stealing session tokens, redirecting users, or defacing the booking interface.
Potential impact on your site
04Site Impact
Visitors and admins may have their sessions hijacked, be redirected to malicious sites, or see altered booking forms. Site reputation and user trust are at risk.
Conditions required to exploit
05Prerequisites
No authentication or user interaction required. The attacker can inject the payload directly via the plugin's input fields.
Key dates
06Disclosure timeline
June 3, 2023
CVE published
April 8, 2026
Record updated