CVE-2024-13431 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin <= 1.6.8.3 - Reflected Cross-Site Scripting
Unauthenticated attackers can inject arbitrary web scripts via reflected XSS in the Simply Schedule Appointments plugin, requiring user interaction to execute.
- 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-2024-13431?
CVE-2024-13431 is a medium-severity cross-site scripting vulnerability in croixhaug Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin, published on 7 Mar 2025. 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 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the accent_color and background parameter in all versions up to, and including, 1.6.8.3 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
Weakness: CWE-79
Which versions are affected by CVE-2024-13431?
It affects 1 product.
Products include Nsquared Appointment Booking Calendar.
How do I fix CVE-2024-13431?
No fix has been published for CVE-2024-13431 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-2024-13431 being exploited?
There is no known exploitation of CVE-2024-13431 in the wild and no public exploit code.
Sources
Also known as GHSA-q9j8-g7vg-642q.