CVE-2026-93655
Booking Calendar <= 11.8.3 - Reflected Cross-Site Scripting via 'wpbc_auto_fill' Parameter
CVSS Score
6.1
EPSS Score
0.0%
EPSS Percentile
0th
The Booking Calendar plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'wpbc_auto_fill' parameter in all versions up to, and including, 11.8.3 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.
| CWE | CWE-79 |
| Vendor | wpdevelop |
| Product | booking calendar |
| Published | Sep 22, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
wpdevelop / Booking Calendar
0 ≤ 11.8.3
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/37fdbbc3-6151-4962-90fa-a621d01a5eb2?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/booking/tags/11.8.3/_dist/all/_src/wpbc_all.js#L3396 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/booking/tags/11.8.3/js/wpbc_time-selector.js#L87 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/booking/tags/11.8.3/_dist/all/_src/wpbc_all.js#L3370 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset?reponame=&old=3703002%40booking&new=3703002%40booking
Credits
Asaf Mozes