Cure53 DOMPurify before 2.0.17 allows mutation XSS. This occurs because a serialize-parse roundtrip does not necessarily return the original DOM tree, and a namespace can change from HTML to MathML, as demonstrated by nesting of FORM elements.
{
"severity": "MODERATE",
"github_reviewed": true,
"cwe_ids": [
"CWE-79"
],
"nvd_published_at": "2020-10-07T16:15:00Z",
"github_reviewed_at": "2020-12-18T22:51:27Z"
}