description: In some cases, removing HTML elements during sanitization would keep existing SVG event handlers and therefore lead to XSS. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.
problem types: XSS through paste (manual and clipboard API)
affected:
{
product: Firefox
vendor: Mozilla
versions:
status: affected, version: < 83
}
{
product: Firefox ESR
vendor: Mozilla
versions:
status: affected, version: < 78.5
}
{
product: Thunderbird
vendor: Mozilla
versions:
status: affected, version: < 78.5
}
