CVE-2021-24673 Appointment Hour Booking < 1.3.16 - Authenticated Stored Cross-Site Scripting
High-privilege users can inject malicious scripts into calendar settings, leading to stored XSS attacks against other users.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-24673?
CVE-2021-24673 is a medium-severity cross-site scripting vulnerability in Unknown Appointment Hour Booking – WordPress Booking Plugin, published on 4 Oct 2021. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
The Appointment Hour Booking WordPress plugin before 1.3.16 does not escape some of the Calendar Form settings, allowing high privilege users to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed.
Weakness: CWE-79
Which versions are affected by CVE-2021-24673?
It affects 1 product.
Products include Dwbooster Appointment Hour Booking.
How do I fix CVE-2021-24673?
No fix has been published for CVE-2021-24673 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-2021-24673 being exploited?
There is no known exploitation of CVE-2021-24673 in the wild and no public exploit code.
Other vulnerabilities in Unknown Appointment Hour Booking – WordPress Booking Plugin
- CVE-2022-4035 Appointment Hour Booking <= 1.3.72 - Unauthenticated iFrame Injection via Appointment Form
- CVE-2019-13505 Cross-site scripting in n/a
- CVE-2022-4034 Appointment Hour Booking <= 1.3.72 - CSV Injection
- CVE-2021-24712 Appointment Hour Booking – WordPress Booking Plugin < 1.3.17 - Authenticated Stored XSS
- CVE-2022-4036 Appointment Hour Booking <= 1.3.72 - CAPTCHA Bypass
Sources
Also known as GHSA-qvf7-69hc-gg63.