The serializer in html5lib before 0.99999999 might allow remote attackers to conduct cross-site scripting (XSS) attacks by leveraging mishandling of the < (less than) character in attribute values.
{
"github_reviewed": true,
"github_reviewed_at": "2022-07-06T19:51:12Z",
"nvd_published_at": "2017-02-22T16:59:00Z",
"cwe_ids": [
"CWE-79"
],
"severity": "MODERATE"
}