The Gallery WordPress plugin before 2.0.0 does not sanitise and escape a parameter before outputting it back in the response of an AJAX action (available to both unauthenticated and authenticated users), leading to a Reflected Cross-Site Scripting issue
[
{
"product": "Gallery – Image and Video Gallery with Thumbnails",
"vendor": "Unknown",
"versions": [
{
"lessThan": "2.0.0",
"status": "affected",
"version": "2.0.0",
"versionType": "custom"
}
]
}
]