{"id":"CVE-2026-41126","aliases":["EUVD-2026-24563","GHSA-cvwj-4pcp-f3g8"],"status":"published","title":"BigBlueButton has Open Redirect through bigbluebutton/api/join via get-parameter \"logoutURL\"","description":"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.","severity":{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00231,"percentile":0.14086,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-601"],"published":"2026-04-21T23:22:34Z","modified":"2026-10-28T02:31:05Z","products":[{"vendor":"bigbluebutton","product":"bigbluebutton"}],"references":[{"url":"https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-cvwj-4pcp-f3g8","tags":["x_refsource_CONFIRM","advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41126.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41126","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-41126","title":"BigBlueButton has Open Redirect through bigbluebutton/api/join via get-parameter \"logoutURL\"","description":"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.","status":"published","published":"2026-04-21T23:22:34.575Z","modified":"2026-04-22T14:16:24.217Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T13:41:08.498858Z"}],"euvd":[{"id":"EUVD-2026-24563","description":"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.","status":"published","published":"2026-04-21T23:22:34Z","modified":"2026-04-22T14:16:24Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T19:24:20.71791Z"}],"nvd":[{"id":"CVE-2026-41126","description":"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.","status":"published","published":"2026-04-22T00:16:28.327Z","modified":"2026-06-17T10:46:12.007Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T14:12:15.493943Z"}],"osv":[{"id":"CVE-2026-41126","title":"BigBlueButton has Open Redirect through bigbluebutton/api/join via get-parameter \"logoutURL\"","description":"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.","status":"published","published":"2026-04-21T23:22:34.575Z","modified":"2026-10-28T02:31:05.097752895Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T15:45:03.424067Z"}]}}