{"id":"CVE-2019-25027","aliases":["GHSA-rp4x-wxqv-cf9m"],"url":"https://o3.security/vulnerability/CVE-2019-25027","summary":"Reflected cross-site scripting in default RouteNotFoundError view in Vaadin 10 and 11-13","details":"Missing output sanitization in default `RouteNotFoundError` view in `com.vaadin:flow-server` versions 1.0.0 through 1.0.10 (Vaadin 10.0.0 through 10.0.13), and 1.1.0 through 1.4.2 (Vaadin 11.0.0 through 13.0.5) allows attacker to execute malicious JavaScript via crafted URL.\n\n- https://vaadin.com/security/cve-2019-25027","published":"2021-04-23T16:15:07.987Z","modified":"2026-10-24T14:19:49.107485972Z","cvss":{"score":6.1,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},"epss":{"score":0.00668,"percentile":0.48908,"asOf":"2026-08-23"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"com.vaadin:flow-server","fixedVersion":"1.0.11"},{"ecosystem":"Maven","name":"com.vaadin:flow-server","fixedVersion":"1.4.3"}],"fix":{"url":"https://github.com/vaadin/flow/pull/5498","label":"vaadin/flow#5498"},"references":[{"type":"ADVISORY","url":"https://vaadin.com/security/cve-2019-25027"},{"type":"FIX","url":"https://github.com/vaadin/flow/pull/5498"},{"type":"WEB","url":"https://github.com/vaadin/flow/security/advisories/GHSA-rp4x-wxqv-cf9m"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2019-25027"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-24T14:19:49.107485972Z"}}