CVE-2016-20084
MEDIUM EPSS 15.5%
Published Jun 15, 20262w ago · Modified Jun 17, 20261w ago
5.1 CVSS 4.0
Published Jun 15, 2026 2w ago
Last Modified Jun 17, 2026 1w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
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 Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction P
Scope X
Threat Intelligence
EPSS Exploit Probability
15.5% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-79 Cross-site Scripting Injection
References 3
- wordpress.dwbooster.com http://wordpress.dwbooster.com/calendars/booking-calendar-contact-form
- exploit-db.com https://www.exploit-db.com/exploits/39341
- vulncheck.com https://www.vulncheck.com/advisories/wordpress-appointment-booking-calendar-privilege-escalation-xss
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.