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CVE-2016-20084

MEDIUM 5.1 CVSS 4.0
Published
June 15, 2026
Last modified
October 29, 2026
NVD status
Deferred
Reported by
disclosure@vulncheck.com
Weakness
CWE-79
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Description

WordPress appointment-booking-calendar 1.1.24 contains multiple privilege escalation vulnerabilities that allow unauthenticated attackers to modify calendar settings and inject persistent cross-site scripting payloads through the admin.php page parameters. Attackers can inject malicious JavaScript into the 'ict' and 'ics' options or the calendar 'name' parameter via GET requests to execute arbitrary scripts when the calendar is displayed or accessed in the administration interface.

Affected WordPress components

  • Appointment Booking Calendar Plugin · appointment-booking-calendar
    Confirmed match Active
    Up to and including 1.1.24
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • dwbooster Appointment Booking Calendar — Up to and including 1.1.24

References