# Booking Calendar – Event Calendar

> Closed on WordPress.org on 2022-10-14, but 1 fix was released after that: still maintained by its vendor outside WordPress.org. Update it from there.

Source: https://todaywp.com (Today WP, free and read-only). 

## Facts

- Slug: hbook
- To check an installed version: wp_security with plugins "hbook:<version>".

## Known vulnerabilities

- 2026-05-27 HIGH: Unauthenticated Stored Cross-Site Scripting via Multiple Parameters (up to 2.1.9). CVE-2026-8143, https://www.wordfence.com/threat-intel/vulnerabilities/id/e1c16bcb-c188-4e01-9d0b-e4e1a1ef82ee?source=api-prod
- 2022-10-17 HIGH: Missing Authorization (up to 1.0.2). WF-84c4e3cc-1f7c-4ed9-9072-32f3e84419c9, https://www.wordfence.com/threat-intel/vulnerabilities/id/84c4e3cc-1f7c-4ed9-9072-32f3e84419c9?source=api-prod

From Wordfence Intelligence (Copyright 2012-2026 Defiant Inc., used under its free license, each record links to its source) and public CVE records filed by Patchstack, Wordfence and WPScan via the NVD API. This product uses the NVD API but is not endorsed or certified by the NVD.