[ CVE-2026-105193 · Published 8 Oct 2026 ]
Vulnerability in Unknown Booking Calendar
CVSS 4.8
EPSS <1%No fix listed yet
[ Description ]Official description
The Booking Calendar WordPress plugin before 11.8 does not generate its per-booking access hashes with sufficient entropy, deriving each from a low-entropy time-seeded value, which can allow unauthenticated attackers who are able to determine a booking's creation time to predict the hash and then read that booking's personal data or modify the booking in place.
[ Fixes ]Fixes and patches
No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.