CVE-2026-25435 HIGH

CVE-2026-25435: WordPress Booking calendar, Appointment Booking System plugin <= 3.2.36 - Cross Site Scripting (XSS) vulnerability

Vendor Wpdevart
Product Booking calendar, Appointment Booking System
Weakness CWE-79 · XSS
Published March 25, 2026
Last update April 28, 2026

CVSS base score

7.1/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

What the vulnerability does

01Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in wpdevart Booking calendar, Appointment Booking System booking-calendar allows Stored XSS.This issue affects Booking calendar, Appointment Booking System: from n/a through <= 3.2.36.

Explanation of Vulnerability in Simple Terms

02Summary

The Booking Calendar plugin for WordPress contains a cross-site scripting (XSS) vulnerability in versions up to 3.2.36. An attacker can inject malicious scripts that execute in visitors' browsers when they interact with booking forms or calendar pages. The vulnerability requires user interaction and can affect multiple users across the site. Update to a version newer than 3.2.36 to resolve this issue.

What an attacker can do

03Attacker Capabilities

Inject malicious scripts that run in visitors' browsers when they view or interact with booking pages.

Potential impact on your site

04Site Impact

Visitors' browsers can be compromised; attackers may steal session cookies, redirect users, or deface booking forms.

Conditions required to exploit

05Prerequisites

No authentication required. Victim must visit a page containing the vulnerable booking calendar or form.

Key dates

06Disclosure timeline

March 25, 2026 CVE published
April 28, 2026 Record updated

Related vulnerabilities

08Related CVE