CVE-2026-14334 Booking calendar, Appointment Booking System <= 3.2.36 - Unauthenticated Stored XSS via SVG File Upload
Unauthenticated attackers can upload malicious SVG files to execute arbitrary JavaScript in administrator sessions via stored XSS.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-14334?
CVE-2026-14334 is a high-severity cross-site scripting vulnerability in Unknown Booking calendar, Appointment Booking System, published on 19 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-79
Which versions are affected by CVE-2026-14334?
How do I fix CVE-2026-14334?
No fix has been published for CVE-2026-14334 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-14334 being exploited?
There is no known exploitation of CVE-2026-14334 in the wild and no public exploit code.
Sources
Also known as GHSA-r53w-7mcr-qp2x.