{"id":"GHSA-8vfw-v2jv-9hwc","aliases":[],"status":"published","title":"Reflected cross-site scripting in development mode handler in Vaadin","description":"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.\n\n- https://vaadin.com/security/cve-2021-33604","severity":{"version":"3.1","score":2.5,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N","level":"low","from":"ghsa"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-172"],"published":"2021-06-28T16:52:45Z","modified":"2024-12-02T05:41:34Z","fixes":[{"ecosystem":"Maven","package":"com.vaadin:flow-server","fixed_in":["2.6.2","6.0.10"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"com.vaadin:flow-server","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0"},{"last_affected":"2.6.1"},{"fixed":"2.6.2"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"com.vaadin:flow-server","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.0"},{"last_affected":"6.0.9"},{"fixed":"6.0.10"}]}]},{"source":"osv","ecosystem":"Maven","package":"com.vaadin:flow-server","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0"},{"fixed":"2.6.2"}]}],"versions":["2.0.0","2.0.1","2.0.10","2.0.11","2.0.12","2.0.13","2.0.14","2.0.15","2.0.16","2.0.17","2.0.18","2.0.19","2.0.2","2.0.3","2.0.4","2.0.5","2.0.6","2.0.7","2.0.8","2.0.9","2.1.0","2.1.0.beta2","2.1.1","2.1.2","2.1.3","2.1.4","2.1.5","2.1.6","2.1.7","2.1.8","2.1.9","2.2.0","2.2.0.alpha11","2.2.1","2.2.2","2.2.3","2.3.0","2.3.0.beta1","2.3.1","2.3.2","2.3.3","2.3.4","2.3.5","2.3.6","2.3.7","2.4.0","2.4.1","2.4.2","2.4.3","2.4.4","2.4.5","2.4.6","2.4.7","2.4.8","2.4.9","2.5.0","2.5.1","2.5.2","2.5.3","2.5.4","2.6.0","2.6.1"]},{"source":"osv","ecosystem":"Maven","package":"com.vaadin:flow-server","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.0"},{"fixed":"6.0.10"}]}],"versions":["3.0.0","3.0.1","3.0.2","3.0.3","3.0.4","3.0.5","3.0.6","3.0.7","3.1.0","3.1.1","3.1.2","3.1.3","3.1.5","3.1.6","3.1.7","4.0.0","4.0.1","4.0.2","4.0.3","4.0.4","4.0.5","4.0.6","4.0.7","4.0.8","5.0.0","5.0.1","5.0.2","5.0.3","5.0.4","6.0.0","6.0.1","6.0.2","6.0.3","6.0.4","6.0.5","6.0.6","6.0.7","6.0.8","6.0.9"]}],"references":[{"url":"https://github.com/vaadin/flow/security/advisories/GHSA-8vfw-v2jv-9hwc","tags":["web"]},{"url":"https://vaadin.com/security/cve-2021-33604","tags":["web"]},{"url":"https://github.com/advisories/GHSA-8vfw-v2jv-9hwc"}],"sources":{"ghsa":[{"id":"GHSA-8vfw-v2jv-9hwc","title":"Reflected cross-site scripting in development mode handler in Vaadin","description":"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.\n\n- https://vaadin.com/security/cve-2021-33604","status":"published","published":"2021-06-28T16:52:45Z","modified":"2023-01-09T05:05:10Z","cvss":[{"version":"3.1","score":2.5,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N","level":"low"}],"cwes":["CWE-172"],"updated_at":"2026-11-02T14:36:11.367194Z"}],"osv":[{"id":"GHSA-8vfw-v2jv-9hwc","title":"Reflected cross-site scripting in development mode handler in Vaadin","description":"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.\n\n- https://vaadin.com/security/cve-2021-33604","status":"published","published":"2021-06-28T16:52:45Z","modified":"2024-12-02T05:41:34.642357Z","cvss":[{"version":"3.1","score":2.5,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N","level":"low"}],"cwes":["CWE-172"],"updated_at":"2026-11-02T15:46:42.78452Z"}]}}