Vega is a visualization grammar, a declarative format for creating, saving, and sharing interactive visualization designs. Vega in an npm package. In Vega before version 5.17.3 there is an XSS vulnerability in Vega expressions. Through a specially crafted Vega expression, an attacker could execute arbitrary javascript on a victim's machine.
This is fixed in version 5.17.3
{
"nvd_published_at": "2020-12-30T23:15:00Z",
"cwe_ids": [
"CWE-79"
],
"github_reviewed_at": "2020-12-30T23:08:59Z",
"severity": "LOW",
"github_reviewed": true
}