Advanced Booking Calendar

Advanced Booking Calendar has 8 disclosed vulnerabilities in the WordSec catalog, reported between 2020 and 2022; 6 are fixed and 2 remain unpatched as of September 2026. Their average CVSS score is 7.9, and the most serious one scores 9.8 out of 10. Severity breakdown: 3 critical and 2 high. 2022 was the busiest year with 5 disclosures.

The most common weakness is SQL Injection, behind 4 of the records (50%). Other recurring categories include Cross-Site Scripting, Cross-Site Request Forgery (CSRF).

6 of the records (75%) have a vendor fix, while 2 remain unpatched. The oldest unresolved one dates back to 2022.

5 independent researchers contributed these findings, most of them (2) reported by iohex.