Threat intelligence

Online Scheduling and Appointment Booking System <= 27.7 - Unauthenticated Stored Cross-Site Scripting via bookly_speed_up_update_addons AJAX action

CVE-2026-13424 · bookly-responsive-appointment-booking-tool

Important: Seeing this vulnerability listed does not mean your website is affected. Exposure depends on whether you run Bookly Responsive Appointment Booking Tool at a vulnerable version. How SiteRespond intelligence works

Vulnerability: Online Scheduling and Appointment Booking System <= 27.7 - Unauthenticated Stored Cross-Site Scripting via bookly_speed_up_update_addons AJAX action
Affected software: bookly-responsive-appointment-booking-tool(Plugin)
Affected versions: ≤ 27.7
Authentication: Unauthenticated
Vulnerability type: Cross-site scripting
CVE: CVE-2026-13424
Published: 15 August 2026
CISA KEV: Not listed in CISA KEV at last catalog refresh
Impact: May allow attackers to run scripts in visitors' browsers or hijack admin sessions.
Source: Data imported from Wordfence Intelligence (advisory cfb53e44-7f9d-490f-b938-f428c20219d7). Methodology and redistribution notes

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