CVE-2026-1431: Booking Calendar <= 10.14.13 - Missing Authorization to Unauthenticated Booking Details Exposure

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-01-31 · updated 2026-06-17
Weakness: CWE-862

Description

The Booking Calendar plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the wpbc_ajax_WPBC_FLEXTIMELINE_NAV() function in all versions up to, and including, 10.14.13. This makes it possible for unauthenticated attackers to retrieve booking information including customer names, phones and emails.

Affected products

wpdevelop Booking Calendar: through 10.14.13

References

https://plugins.trac.wordpress.org/browser/booking/tags/10.14.13/core/lib/wpbc-ajax.php#L25
https://www.wordfence.com/threat-intel/vulnerabilities/id/0bd92f91-d9b1-4f6f-ac1a-477950ea2e80?source=cve

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