using fullpage.js you can create a anchor tag . But when put href in anchor then it does not sanitize the url which allow for a break in the context of anchor element and can add our new element.
{
"cwe_ids": [
"CWE-79"
],
"github_reviewed": true,
"github_reviewed_at": "2022-04-22T20:26:49Z",
"nvd_published_at": "2022-04-12T21:15:00Z",
"severity": "MODERATE"
}