WordPress plugin
Booking Calendar security & vulnerabilities
No known unpatched vulnerabilities in the latest version
All 38 known vulnerabilities are fixed in the latest release. If you run an older version, update to null or newer.
- Critical1
- High8
- Medium28
- Low1
All Booking Calendar vulnerabilities
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Booking Calendar: common questions
Does Booking Calendar have known vulnerabilities?
Yes. VulnCrest Radar lists 38 known vulnerabilities in Booking Calendar: 1 critical, 8 high, 28 medium, 1 low. None are known to affect version null.
How do I check which version of Booking Calendar I run?
In wp-admin open Plugins → Installed Plugins; the version is shown under the name. Without admin access, our passive Check my site tool can often read it from public files.
What is the most recent Booking Calendar vulnerability?
CVE-2026-18496, published Oct 9, 2026: Booking Calendar <= 11.4.3 - Unauthenticated Sensitive Information Exposure in 'WPBC_FLEXTIMELINE_NAV' AJAX Action. Severity: Medium (CVSS 5.3).
Is any Booking Calendar vulnerability listed in CISA KEV?
No. None of the known Booking Calendar vulnerabilities is currently listed in the CISA KEV catalog.