The Flex Local Fonts WordPress plugin through 1.0.0 does not escape the Class Name field when adding a font, which could allow hight privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed.
[
{
"product": "Flex Local Fonts",
"vendor": "Unknown",
"versions": [
{
"lessThanOrEqual": "1.0.0",
"status": "affected",
"version": "1.0.0",
"versionType": "custom"
}
]
}
]