CVE-2026-92561
Booking Calendar <= 11.8.2 - Reflected Cross-Site Scripting via 'options' Parameter
The Booking Calendar plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'options' parameter in all versions up to, and including, 11.8.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. The nonce check is bypassed by default because the 'booking_is_nonce_at_front_end' option ships disabled, allowing unauthenticated requests to reach the vulnerable sink without any verification.
| CWE | CWE-79 |
| Vendor | wpdevelop |
| Product | booking calendar |
| Published | Sep 18, 2026 |
Get instant alerts for wpdevelop booking calendar
Be the first to know when new medium vulnerabilities affecting wpdevelop booking calendar are published — delivered to Slack, Telegram or Discord.
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N