The Simply Schedule Appointments WordPress plugin before 1.5.7.7 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)
[
{
"product": "Simply Schedule Appointments – WordPress Booking Plugin",
"vendor": "Unknown",
"versions": [
{
"lessThan": "1.5.7.7",
"status": "affected",
"version": "1.5.7.7",
"versionType": "custom"
}
]
}
]