{"id":"CVE-2026-41126","summary":"BigBlueButton has Open Redirect through bigbluebutton/api/join via get-parameter \"logoutURL\"","details":"BigBlueButton is an open-source virtual classroom. Versions prior to 3.0.24 have an Open Redirect through bigbluebutton/api/join via get-parameter \"logoutURL.\" Version 3.0.24 has adjusted the handling of requests with incorrect checksum so that the default logoutURL is used. No known workarounds are available.","aliases":["GHSA-cvwj-4pcp-f3g8"],"modified":"2026-07-08T08:13:12.660722433Z","published":"2026-04-21T23:22:34.575Z","database_specific":{"cwe_ids":["CWE-601"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41126.json","cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41126.json"},{"type":"ADVISORY","url":"https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-cvwj-4pcp-f3g8"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41126"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/bigbluebutton/bigbluebutton","events":[{"introduced":"0"},{"fixed":"9dbfaaa7b9af81c9fba955024ac92df0a88681a7"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"3.0.24"}],"source":"AFFECTED_FIELD"}}],"versions":["v3.0.23","v3.0.22","v3.0.21","v3.0.20","v3.0.19","v3.0.18","v3.0.17","v3.0.16","v3.0.15","v3.0.14","v3.0.13","v3.0.12","v3.0.11","v3.0.8","v3.0.10","v3.0.9","v3.0.7","v3.0.5","v3.0.4","v3.0.2","v3.0.3","v3.0.0","v3.0.1","v3.0.0-rc.4","v3.0.0-rc.3","v3.0.0-rc.2","v3.0.0-rc.1","3.0.0-rc.1","v3.0.0-beta.7","v3.0.0-beta.6","v3.0.0-beta.5","v3.0.0-beta.4","v3.0.0-beta.3","v3.0.0-beta.2","v3.0.0-beta.1","v3.0.0-alpha.7","v3.0.0-alpha.6","v3.0.0-alpha.4","v3.0.0-alpha.3","v3.0.0-alpha.2","v3.0.0-alpha.1","v2.4-beta-4","v2.4-beta-3","v2.4-beta-2","v2.4-beta-1","v2.4-alpha-1","v2.3.1","v2.3.0","v2.3-rc-2","v2.3-rc-1","v2.3-beta-5","v2.3-beta-4","v2.3-beta-3","v2.3-beta-2","v2.3-beta-1","v2.3-alpha-8","v2.3-alpha-7","v2.3-alpha-6","v2.3-alpha-5","v2.3-alpha-4","v2.3-alpha-3","v2.3-alpha-2","v2.3-alpha-1","2.2-rc-3","2.2-rc-2","2.2-rc-1","2.2-beta-23","2.2-beta-22","2.2-beta-21","2.2-beta-20","2.2-beta-19","2.2-beta-18","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-2026-41126.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N"}]}