URL encoding error in development mode handler in com.vaadin:flow-server versions 2.0.0 through 2.6.1 (Vaadin 14.0.0 through 14.6.1), 3.0.0 through 6.0.9 (Vaadin 15.0.0 through 19.0.8) allows local user to execute arbitrary JavaScript code by opening crafted URL in browser.
{
    "nvd_published_at": "2021-06-24T12:15:00Z",
    "severity": "LOW",
    "cwe_ids": [
        "CWE-172"
    ],
    "github_reviewed_at": "2021-06-24T19:31:53Z",
    "github_reviewed": true
}