The My Calendar WordPress plugin before 3.2.18 does not sanitise and escape the callback parameter of the mc_post_lookup AJAX action (available to any authenticated user) before outputting it back in the response, leading to a Reflected Cross-Site Scripting issue
[
{
"product": "My Calendar",
"vendor": "Unknown",
"versions": [
{
"lessThan": "3.2.18",
"status": "affected",
"version": "3.2.18",
"versionType": "custom"
}
]
}
]