{"id":"CVE-2019-25027","aliases":["EUVD-2021-0873","GHSA-rp4x-wxqv-cf9m"],"status":"published","title":"Reflected cross-site scripting in default RouteNotFoundError view in Vaadin 10 and 11-13","description":"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","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00668,"percentile":0.52195,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79","CWE-81"],"published":"2021-04-19T14:52:29Z","modified":"2026-10-24T14:19:49Z","fixes":[{"ecosystem":"Maven","package":"com.vaadin:flow-server","fixed_in":["1.0.11","1.4.3"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"com.vaadin:flow-server","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.0"},{"fixed":"1.0.11"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"com.vaadin:flow-server","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.1.0"},{"fixed":"1.4.3"}]}]},{"source":"osv","ecosystem":"Maven","package":"com.vaadin:flow-server","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.0"},{"fixed":"1.0.11"}]}],"versions":["1.0.0","1.0.1","1.0.10","1.0.2","1.0.3","1.0.4","1.0.5","1.0.6","1.0.7","1.0.8","1.0.9"]},{"source":"osv","ecosystem":"Maven","package":"com.vaadin:flow-server","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.1.0"},{"fixed":"1.4.3"}]}],"versions":["1.1.0","1.2.0","1.2.1","1.2.2","1.2.3","1.2.4","1.2.5","1.3.0","1.4.0","1.4.1","1.4.2"]}],"products":[{"vendor":"flow","product":"flow-server"},{"vendor":"vaadin","product":"flow"},{"vendor":"vaadin","product":"flow-server"},{"vendor":"vaadin","product":"vaadin"}],"references":[{"url":"https://vaadin.com/security/cve-2019-25027","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","advisory","web"]},{"url":"https://github.com/vaadin/flow/pull/5498","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://github.com/vaadin/flow/security/advisories/GHSA-rp4x-wxqv-cf9m","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-25027","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-rp4x-wxqv-cf9m"}],"sources":{"cve":[{"id":"CVE-2019-25027","title":"Reflected cross-site scripting in default RouteNotFoundError view in Vaadin 10 and 11-13","description":"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","status":"published","published":"2021-04-23T16:05:40.442Z","modified":"2024-09-17T01:15:38.495Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-81"],"updated_at":"2026-11-02T14:20:19.737165Z"}],"euvd":[{"id":"EUVD-2021-0873","description":"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","status":"published","published":"2021-04-23T16:05:40Z","modified":"2024-09-17T01:15:38Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-03T00:28:51.722495Z"}],"ghsa":[{"id":"GHSA-rp4x-wxqv-cf9m","title":"Reflected cross-site scripting in default RouteNotFoundError view in Vaadin 10 and 11-13","description":"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","status":"published","published":"2021-04-19T14:52:29Z","modified":"2023-02-01T05:05:36Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79","CWE-81"],"updated_at":"2026-11-02T14:36:34.917834Z"}],"nvd":[{"id":"CVE-2019-25027","description":"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","status":"published","published":"2021-04-23T16:15:07.987Z","modified":"2026-06-17T02:31:30.477Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-81","CWE-79"],"updated_at":"2026-11-02T14:05:48.502374Z"}],"osv":[{"id":"CVE-2019-25027","description":"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","status":"published","published":"2021-04-23T16:15:07.987Z","modified":"2026-10-24T14:19:49.107485972Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:12.363788Z"},{"id":"GHSA-rp4x-wxqv-cf9m","title":"Reflected cross-site scripting in default RouteNotFoundError view in Vaadin 10 and 11-13","description":"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","status":"published","published":"2021-04-19T14:52:29Z","modified":"2023-11-08T04:01:32.550903Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79","CWE-81"],"updated_at":"2026-11-02T15:46:56.281047Z"}]}}