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.

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Fixes

Solution

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Workaround

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History

Fri, 09 Oct 2026 09:15:00 +0000

Type Values Removed Values Added
First Time appeared Wordpress-extensions
Wordpress-extensions booking Calendar
Vendors & Products Wordpress-extensions
Wordpress-extensions booking Calendar

Thu, 08 Oct 2026 11:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-326
Metrics cvssV3_1

{'score': 4.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 08 Oct 2026 06:15:00 +0000

Type Values Removed Values Added
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.
Title Booking Calendar < 11.8 - Unauthenticated Booking Information Disclosure and Modification via Predictable Booking Hash
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: WPScan

Published:

Updated: 2026-10-08T10:59:19.282Z

Reserved: 2026-10-04T11:54:27.415Z

Link: CVE-2026-105193

cve-icon Vulnrichment

Updated: 2026-10-08T10:54:52.875Z

cve-icon NVD

Status : Deferred

Published: 2026-10-08T06:16:39.473

Modified: 2026-10-08T20:51:18.123

Link: CVE-2026-105193

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-09T08:13:28Z

Weaknesses