{"id":"CVE-2021-36580","aliases":["EUVD-2021-23177","GHSA-5q6m-32cq-4f86"],"status":"published","title":"Open Redirect vulnerability exists in IceWarp MailServer IceWarp Server Deep Castle 2 Update 1 ...","description":"Open Redirect vulnerability exists in IceWarp MailServer IceWarp Server Deep Castle 2 Update 1 (13.0.1.2) via the referer parameter.","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":"2026-11-12","score":0.01588,"percentile":0.75965,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-601"],"published":"2023-07-27T00:00:00Z","modified":"2026-07-09T01:16:57Z","exploits":[{"source":"nuclei","id":"CVE-2021-36580","title":"IceWarp Mail Server - Open Redirect","type":"detection template","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-36580.yaml"}],"products":[{"vendor":"icewarp","product":"icewarp_server"},{"vendor":"icewarp","product":"mail_server"}],"references":[{"url":"https://medium.com/@rohitgautam26/cve-2021-36580-69219798231c"},{"url":"http://mail.ziyan.com","tags":["x_transferred","Permissions Required"]},{"url":"https://medium.com/%40rohitgautam26/cve-2021-36580-69219798231c","tags":["x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-36580"},{"url":"http://icewarp.com"},{"url":"https://github.com/advisories/GHSA-5q6m-32cq-4f86"}],"sources":{"cve":[{"id":"CVE-2021-36580","description":"Open Redirect vulnerability exists in IceWarp MailServer IceWarp Server Deep Castle 2 Update 1 (13.0.1.2) via the referer parameter.","status":"published","published":"2023-07-27T00:00:00Z","modified":"2026-07-09T00:14:10.909Z","updated_at":"2026-11-02T14:33:05.989686Z"}],"euvd":[{"id":"EUVD-2021-23177","description":"Open Redirect vulnerability exists in IceWarp MailServer IceWarp Server Deep Castle 2 Update 1 (13.0.1.2) via the referer parameter.","status":"published","published":"2023-07-27T00:00:00Z","modified":"2026-07-09T00:14:10Z","updated_at":"2026-11-02T18:20:09.112703Z"}],"ghsa":[{"id":"GHSA-5q6m-32cq-4f86","title":"Open Redirect vulnerability exists in IceWarp MailServer IceWarp Server Deep Castle 2 Update 1 ...","description":"Open Redirect vulnerability exists in IceWarp MailServer IceWarp Server Deep Castle 2 Update 1 (13.0.1.2) via the referer parameter.","status":"published","published":"2023-07-27T18:30:35Z","modified":"2024-04-04T06:24:23Z","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"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T14:56:42.088122Z"}],"nvd":[{"id":"CVE-2021-36580","description":"Open Redirect vulnerability exists in IceWarp MailServer IceWarp Server Deep Castle 2 Update 1 (13.0.1.2) via the referer parameter.","status":"published","published":"2023-07-27T18:15:09.893Z","modified":"2026-07-09T01:16:57.517Z","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"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T14:07:07.764332Z"}]}}