PT-2026-43572 · Omnivo+1 · Booking Calendar – Event Calendar+1

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CVE-2026-8143

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Published

2026-05-27

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Updated

2026-07-29

CVSS v3.1

7.2

High

VectorAV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Name of the Vulnerable Software and Affected Versions HBook plugin for WordPress versions prior to 2.2.0
Description Insufficient input sanitization and output escaping allow unauthenticated attackers to perform Stored Cross-Site Scripting. This occurs via the hb country iso, hb usa state iso, and hb canada province iso parameters, enabling the injection of arbitrary web scripts that execute when a user accesses the HBook Customers admin page.
Recommendations Update the plugin to a version newer than 2.1.9.

Fix

XSS

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Weakness Enumeration

Related Identifiers

CVE-2026-8143

Affected Products

Booking Calendar – Event Calendar
Hbook