The Flat Preloader WordPress plugin before 1.5.4 does not enforce nonce checks when saving its settings, as well as does not sanitise and escape them, which could allow attackers to a make logged in admin change them with a Cross-Site Scripting payload (triggered either in the frontend or backend depending on the payload)
[
{
"product": "Flat Preloader",
"vendor": "Unknown",
"versions": [
{
"lessThan": "1.5.4",
"status": "affected",
"version": "1.5.4",
"versionType": "custom"
}
]
}
]