{"id":"CVE-2022-36028","aliases":["EUVD-2022-38808"],"status":"published","title":"BigBlueButton Greenlight Open Redirect vulnerability","description":"Greenlight is an end-user interface for BigBlueButton servers. Versions prior to 2.13.0 have an open redirect vulnerability in the Login page due to unchecked the value of the `return_to` cookie. Versions 2.13.0 contains a patch for the issue.","severity":{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00362,"percentile":0.30251,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-601"],"published":"2024-04-25T20:36:37Z","modified":"2026-10-28T02:30:50Z","products":[{"vendor":"bigbluebutton","product":"greenlight"}],"references":[{"url":"https://huntr.com/bounties/ba5834bd-1f04-4936-8e93-2442d45403bahttps://","tags":["x_transferred","Broken Link","Third Party Advisory","web"]},{"url":"https://github.com/bigbluebutton/greenlight/commit/20fe1ee71b5703fcc4ed698a959ad224fed19623","tags":["x_transferred","Patch","fix"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/36xxx/CVE-2022-36028.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-36028","tags":["advisory"]},{"url":"https://github.com/bigbluebutton/greenlight","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2022-36028","title":"BigBlueButton Greenlight Open Redirect vulnerability","description":"Greenlight is an end-user interface for BigBlueButton servers. Versions prior to 2.13.0 have an open redirect vulnerability in the Login page due to unchecked the value of the `return_to` cookie. Versions 2.13.0 contains a patch for the issue.\n","status":"published","published":"2024-04-25T20:36:37.543Z","modified":"2024-08-03T09:51:59.902Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"cna"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T14:34:35.945659Z"}],"euvd":[{"id":"EUVD-2022-38808","description":"Greenlight is an end-user interface for BigBlueButton servers. Versions prior to 2.13.0 have an open redirect vulnerability in the Login page due to unchecked the value of the `return_to` cookie. Versions 2.13.0 contains a patch for the issue.\n","status":"published","published":"2024-04-25T20:36:37Z","modified":"2024-08-03T09:51:59Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"updated_at":"2026-11-03T03:25:26.362132Z"}],"nvd":[{"id":"CVE-2022-36028","description":"Greenlight is an end-user interface for BigBlueButton servers. Versions prior to 2.13.0 have an open redirect vulnerability in the Login page due to unchecked the value of the `return_to` cookie. Versions 2.13.0 contains a patch for the issue.\n","status":"published","published":"2024-04-25T21:15:46.327Z","modified":"2026-06-17T04:52:46.353Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","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"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T14:07:40.49892Z"}],"osv":[{"id":"CVE-2022-36028","title":"BigBlueButton Greenlight Open Redirect vulnerability","description":"Greenlight is an end-user interface for BigBlueButton servers. Versions prior to 2.13.0 have an open redirect vulnerability in the Login page due to unchecked the value of the `return_to` cookie. Versions 2.13.0 contains a patch for the issue.\n","status":"published","published":"2024-04-25T20:36:37.543Z","modified":"2026-10-28T02:30:50.234622017Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T15:44:26.195407Z"}]}}