What is CVE-2026-14334?

CVE-2026-14334 is a high-severity vulnerability in Booking Calendar, Appointment System, classified under Cross-site Scripting. CVSS score: 8.8/10. Published 2026-08-19.

How severe is CVE-2026-14334?

High severity. CVSS v3 base score is 8.8 out of 10.

XSS in Booking Calendar, Appointment System

CVE-2026-14334

The Booking calendar, Appointment Booking System WordPress plugin through 3.2.36 does not properly sanitize uploaded SVG files, allowing unauthenticated attackers to upload a file that bypasses the Booking calendar, Appointment Booking System WordPress plugin through 3.2.36's script-stripping and executes arbitrary JavaScript when the SVG is opened, including in the session of an administrator who reviews the submitted booking.

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Unknown Booking Calendar, Appointment System

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

contact@wpscan.com (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-14334?: CVE-2026-14334 is a high-severity vulnerability in Booking Calendar, Appointment System, classified under Cross-site Scripting. CVSS score: 8.8/10. Published 2026-08-19.
How severe is CVE-2026-14334?: High severity. CVSS v3 base score is 8.8 out of 10.