CVE-2025-23526

CVE-2025-23526 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as Reflected Cross-site Scripting (XSS) under CWE-79, in the Swift Calendar Online Appointment Scheduling WordPress plugin (online-appointment-scheduling-software). This issue affects all versions from n/a through 1.3.3, as published on 2025-03-03.

The vulnerability carries a CVSS v3.1 base score of 7.1 (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L), indicating network accessibility, low attack complexity, no required privileges, and user interaction such as clicking a malicious link. Unauthenticated attackers can exploit it by injecting malicious payloads into web pages generated by the plugin, tricking victims into executing arbitrary scripts in their browser context with changed scope, potentially compromising low levels of confidentiality, integrity, and availability.

The Patchstack advisory provides further details on this WordPress plugin vulnerability, accessible at https://patchstack.com/database/Wordpress/Plugin/online-appointment-scheduling-software/vulnerability/wordpress-swift-calendar-online-appointment-scheduling-plugin-1-3-3-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve.