{"id":"CVE-2021-43270","aliases":["EUVD-2021-30214","GHSA-rqgw-v4jg-gxqp"],"status":"published","title":"Datalust Seq.App.EmailPlus (aka seq-app-htmlemail) 3.1.0-dev-00148, 3.1.0-dev-00170, and 3.1.0...","description":"Datalust Seq.App.EmailPlus (aka seq-app-htmlemail) 3.1.0-dev-00148, 3.1.0-dev-00170, and 3.1.0-dev-00176 can use cleartext SMTP on port 25 in some cases where encryption on port 465 was intended.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.0038,"percentile":0.32515,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-319"],"published":"2021-11-02T22:40:58Z","modified":"2026-06-17T04:10:45Z","products":[{"vendor":"datalust","product":"seq.app.emailplus"}],"references":[{"url":"https://github.com/datalust/seq-app-htmlemail/pull/93","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-43270"},{"url":"https://github.com/advisories/GHSA-rqgw-v4jg-gxqp"}],"sources":{"cve":[{"id":"CVE-2021-43270","description":"Datalust Seq.App.EmailPlus (aka seq-app-htmlemail) 3.1.0-dev-00148, 3.1.0-dev-00170, and 3.1.0-dev-00176 can use cleartext SMTP on port 25 in some cases where encryption on port 465 was intended.","status":"published","published":"2021-11-02T22:40:58Z","modified":"2024-08-04T03:55:28.37Z","updated_at":"2026-11-02T14:32:57.033395Z"}],"euvd":[{"id":"EUVD-2021-30214","description":"Datalust Seq.App.EmailPlus (aka seq-app-htmlemail) 3.1.0-dev-00148, 3.1.0-dev-00170, and 3.1.0-dev-00176 can use cleartext SMTP on port 25 in some cases where encryption on port 465 was intended.","status":"published","published":"2021-11-02T22:40:58Z","modified":"2024-08-04T03:55:28Z","updated_at":"2026-11-03T03:24:14.245608Z"}],"ghsa":[{"id":"GHSA-rqgw-v4jg-gxqp","title":"Datalust Seq.App.EmailPlus (aka seq-app-htmlemail) 3.1.0-dev-00148, 3.1.0-dev-00170, and 3.1.0...","description":"Datalust Seq.App.EmailPlus (aka seq-app-htmlemail) 3.1.0-dev-00148, 3.1.0-dev-00170, and 3.1.0-dev-00176 can use cleartext SMTP on port 25 in some cases where encryption on port 465 was intended.","status":"published","published":"2022-05-24T19:19:39Z","modified":"2023-08-17T05:02:15Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T14:54:45.82233Z"}],"nvd":[{"id":"CVE-2021-43270","description":"Datalust Seq.App.EmailPlus (aka seq-app-htmlemail) 3.1.0-dev-00148, 3.1.0-dev-00170, and 3.1.0-dev-00176 can use cleartext SMTP on port 25 in some cases where encryption on port 465 was intended.","status":"published","published":"2021-11-02T23:15:07.537Z","modified":"2026-06-17T04:10:45.713Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-319"],"updated_at":"2026-11-02T14:07:00.549994Z"}]}}