Known vulnerabilities in WP Simple Booking Calendar

This booking calendar shows when something is booked or available. Use it to show when your holiday home is available for rent, for example.

4Reported vulnerabilities

8.8Highest CVSS score

2.0.16Latest version

20,000+Active installs

What to do now

Update WP Simple Booking Calendar to 2.0.14 or later. 4 of these have a fixed version available. Updating resolves them.

Plugin last updated: June 29, 2026 / Tested up to WordPress: 7.0.4 / View on wordpress.org

Reported vulnerabilities

Ordered by how urgently they need attention — whether a vulnerability is actually being exploited, and how likely exploitation is, rather than CVSS severity alone.

CVE	Severity	Exploit probability next 30 days	Affected versions	Fixed in	Published
CVE-2021-24726	High 8.8	1.6%	Before 2.0.6	`2.0.6`	September 13, 2021
CVE-2024-8663	Medium 6.1	0.4%	Before 2.0.11	`2.0.11`	September 13, 2024
CVE-2025-39541	Medium 4.3	0.3%	2.0.13 and earlier	`2.0.14`	April 16, 2025
CVE-2023-51525	Medium 4.3	0.2%	2.0.8.4 and earlier	`2.0.8.5`	December 27, 2023

Sources: vulnerability records from NVD, exploitation from CISA KEV, exploit probability from EPSS. Affected versions come from CPE ranges or from the reporting CNA.