HIGHCVE-2026-8143Published Modified CNA Wordfence
CVE-2026-8143: Booking Calendar – Event Calendar <= 2.1.6 - Unauthenticated Stored Cross-Site Scripting via Multiple Parameters
The HBook plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'hb_country_iso', 'hb_usa_state_iso', and 'hb_canada_province_iso' parameters in all versions up to, and including, 2.1.6 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page (the HBook Customers admin page).
Metrics
- CVSS v3.1
- 7.2
- Severity
- HIGH
- Fixed in
- —
- Affected Products
- 1
Affected packages
- omnivo / Booking Calendar – Event Calendar≤ 2.1.6
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:NReferences