{"id":"CVE-2020-28953","details":"In BigBlueButton before 2.2.29, a user can vote more than once in a single poll.","modified":"2026-08-07T15:12:24.998391Z","published":"2020-11-19T22:15:13.677Z","references":[{"type":"ADVISORY","url":"https://github.com/bigbluebutton/bigbluebutton/compare/v2.2.28...v2.2.29"},{"type":"FIX","url":"https://github.com/bigbluebutton/bigbluebutton/commit/d2cb02b3bd670265c6b1ba003f87fc261e0ac3e1"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/bigbluebutton/bigbluebutton","events":[{"introduced":"0"},{"fixed":"18b75285714bc2eca7a58a0611ff3af267cbd4c7"},{"fixed":"d2cb02b3bd670265c6b1ba003f87fc261e0ac3e1"}],"database_specific":{"cpe":"cpe:2.3:a:bigbluebutton:bigbluebutton:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"2.2.29"}],"source":["CPE_RANGE","REFERENCES"]}}],"versions":["v2.2.28","v2.2.27","v2.2.26","v2.2.23","v2.2.25","v2.2.24","v2.2.22","v2.2.21","v2.2.20","v2.2.19","v2.2.18","v2.2.17","v2.2.16","v2.2.15","v2.2.14","v2.2.12","v2.2.11-good","v2.2.10","v2.2.9","v2.2.8","v2.2.7","v2.2.6","v2.2.5","v2.2.4","v2.2.2","v2.2.3","v2.2.1","v2.2.0","2.2-rc-6","2.2-rc-5","2.2-rc-4","2.2-beta-17","2.2-beta-16","2.2-beta-15","2.2-beta-14","2.2-beta-12","2.2-beta-11","2.2-beta-10","2.2-beta-9","2.2-beta-8","2.2-beta-7","2.2-beta-6","2.2-beta-5","2.2-beta-4","2.2-beta-3","2.2-beta-2","dcs-2-a","v0.9.0-beta","v0.8","v0.8rc2","v0.8b4.0","v0.8b4"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-28953.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"}]}