{"id":"CVE-2020-9444","aliases":["EUVD-2020-30264","GHSA-gq6q-gh85-7w3x"],"status":"published","title":"Zulip Server before 2.1.3 allows reverse tabnabbing via the Markdown functionality.","description":"Zulip Server before 2.1.3 allows reverse tabnabbing via the Markdown functionality.","severity":{"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","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00671,"percentile":0.52369,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-1021"],"published":"2020-04-20T19:49:16Z","modified":"2026-10-24T10:30:20Z","products":[{"vendor":"zulip","product":"zulip_server"}],"references":[{"url":"https://blog.zulip.org/2020/04/01/zulip-server-2-1-3-security-release/","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-9444"},{"url":"https://github.com/advisories/GHSA-gq6q-gh85-7w3x"}],"sources":{"cve":[{"id":"CVE-2020-9444","description":"Zulip Server before 2.1.3 allows reverse tabnabbing via the Markdown functionality.","status":"published","published":"2020-04-20T19:49:16Z","modified":"2024-08-04T10:26:16.275Z","updated_at":"2026-11-02T14:35:49.209579Z"}],"euvd":[{"id":"EUVD-2020-30264","description":"Zulip Server before 2.1.3 allows reverse tabnabbing via the Markdown functionality.","status":"published","published":"2020-04-20T19:49:16Z","modified":"2024-08-04T10:26:16Z","updated_at":"2026-11-03T03:07:54.025234Z"}],"ghsa":[{"id":"GHSA-gq6q-gh85-7w3x","title":"Zulip Server before 2.1.3 allows reverse tabnabbing via the Markdown functionality.","description":"Zulip Server before 2.1.3 allows reverse tabnabbing via the Markdown functionality.","status":"published","published":"2022-05-24T17:15:50Z","modified":"2023-01-29T05:02:37Z","updated_at":"2026-11-02T14:45:07.602262Z"}],"nvd":[{"id":"CVE-2020-9444","description":"Zulip Server before 2.1.3 allows reverse tabnabbing via the Markdown functionality.","status":"published","published":"2020-04-20T20:15:11.933Z","modified":"2026-06-17T03:27:57.74Z","cvss":[{"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"},{"version":"2.0","score":5.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-1021"],"updated_at":"2026-11-02T14:05:59.718774Z"}],"osv":[{"id":"CVE-2020-9444","description":"Zulip Server before 2.1.3 allows reverse tabnabbing via the Markdown functionality.","status":"published","published":"2020-04-20T20:15:11.933Z","modified":"2026-10-24T10:30:20.935627963Z","cvss":[{"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"}],"updated_at":"2026-11-02T15:44:17.663289Z"}]}}