The Appointment Hour Booking – Booking Calendar plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via Booking Form Single-Line Field via Schedule Calendar List Renderer in all versions up to, and including, 1.5.97 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires the 'list_readmore_numberofwords' Other Parameters setting to be configured with a positive integer value; the default value of 0 bypasses the decode-and-truncate branch entirely and is not exploitable through this sink.

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Fixes

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Workaround

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History

Thu, 01 Oct 2026 16:00:00 +0000

Type Values Removed Values Added
First Time appeared Codepeople
Codepeople appointment Booking Calendar
Wordpress-extensions
Wordpress-extensions appointment Hour Booking
Vendors & Products Codepeople
Codepeople appointment Booking Calendar
Wordpress-extensions
Wordpress-extensions appointment Hour Booking

Thu, 01 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Thu, 01 Oct 2026 09:00:00 +0000

Type Values Removed Values Added
Description The Appointment Hour Booking – Booking Calendar plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via Booking Form Single-Line Field via Schedule Calendar List Renderer in all versions up to, and including, 1.5.97 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires the 'list_readmore_numberofwords' Other Parameters setting to be configured with a positive integer value; the default value of 0 bypasses the decode-and-truncate branch entirely and is not exploitable through this sink.
Title Appointment Hour Booking <= 1.5.97 - Unauthenticated Stored DOM-Based Cross-Site Scripting via Booking Form Single-Line Field via Schedule Calendar List Renderer
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 7.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-10-01T14:13:25.726Z

Reserved: 2026-09-23T13:27:20.103Z

Link: CVE-2026-96573

cve-icon Vulnrichment

Updated: 2026-10-01T14:13:21.250Z

cve-icon NVD

Status : Deferred

Published: 2026-10-01T09:17:10.647

Modified: 2026-10-01T15:17:37.320

Link: CVE-2026-96573

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-01T15:36:06Z

Weaknesses