In Eclipse Theia versions up to and including 1.8.0, in the debug console there is no HTML escaping, so arbitrary Javascript code can be injected.
{
"cwe_ids": [
"CWE-79"
],
"github_reviewed": true,
"github_reviewed_at": "2021-03-26T23:20:56Z",
"nvd_published_at": "2021-03-12T22:15:00Z",
"severity": "MODERATE"
}