CVE-2026-15289 Booking calendar, Appointment Booking System <= 3.2.17 - Unauthenticated Time-Based SQL Injection via 'wpdevart_id'
Unauthenticated attackers can extract sensitive database information via SQL injection in the Booking calendar plugin when the Pro version is active with specific settings.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-15289?
CVE-2026-15289 is a medium-severity SQL injection vulnerability in wpdevart Booking calendar, Appointment Booking System, published on 10 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Booking calendar, Appointment Booking System plugin for WordPress is vulnerable to time-based SQL Injection via the ‘wpdevart_id’ parameter in all versions up to, and including, 3.2.17 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. In order to exploit the vulnerability, the Pro version of the plugin must be installed and activated, with the 'Delete previous dates' option checked.
Weakness: CWE-89
Which versions are affected by CVE-2026-15289?
How do I fix CVE-2026-15289?
No fix has been published for CVE-2026-15289 yet. Limit exposure of the affected software until one is available.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2026-15289 being exploited?
There is no known exploitation of CVE-2026-15289 in the wild and no public exploit code.
Sources
Also known as GHSA-937q-4w7r-c9jv.