CVE-2023-4620 Booking Calendar < 9.7.3.1 - Unauthenticated Stored XSS

What is CVE-2023-4620?

CVE-2023-4620 is a medium-severity cross-site scripting vulnerability in Unknown Booking Calendar, published on 16 Oct 2023. 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 WordPress plugin before 9.7.3.1 does not sanitize and escape some of its booking from data, allowing unauthenticated users to perform Stored Cross-Site Scripting attacks against administrators

Which versions are affected by CVE-2023-4620?

It affects 1 product.

Products include Wpbookingcalendar Booking Calendar.

How do I fix CVE-2023-4620?

No fix has been published for CVE-2023-4620 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-2023-4620 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-4620 exists.

Other vulnerabilities in Unknown Booking Calendar

• CVE-2024-1207 Booking Calendar <= 9.9 - Unauthenticated SQL Injection Critical 9.8
• CVE-2023-51520 WordPress Booking Calendar Plugin < 9.7.4 is vulnerable to Cross Site Scripting (XSS) Medium 6.5
• CVE-2024-6930 WP Booking Calendar <= 10.2.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via bookingform Shortcode Medium 6.4
• CVE-2022-33177 WordPress Booking Calendar plugin <= 9.2.1 - Cross-Site Request Forgery (CSRF) vulnerabiulity Medium 5.4
• CVE-2024-13821 WP Booking Calendar <= 10.10 - Unauthenticated Post-Confirmation Booking Manipulation Medium 5.3

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-j6vq-hjmf-4p85.