{"id":"CVE-2020-29547","aliases":["EUVD-2020-21913","GHSA-xhj4-5383-37r2","UBUNTU-CVE-2020-29547"],"status":"published","title":"An issue was discovered in Citadel through webcit-926. Meddler-in-the-middle attackers can...","description":"An issue was discovered in Citadel through webcit-926. Meddler-in-the-middle attackers can pipeline commands after POP3 STLS, IMAP STARTTLS, or SMTP STARTTLS commands, injecting cleartext commands into an encrypted user session. This can lead to credential disclosure.","severity":{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00753,"percentile":0.55389,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-77"],"published":"2023-05-29T00:00:00Z","modified":"2026-06-17T03:11:24Z","affected":[{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"citadel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["9.01-1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"citadel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["911-1","917-2"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"citadel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["917-3","917-4"]}],"products":[{"vendor":"citadel","product":"webcit"}],"references":[{"url":"http://uncensored.citadel.org/msg/4576039","tags":["x_transferred","Vendor Advisory"]},{"url":"http://uncensored.citadel.org/dotgoto?room=Citadel%20Security","tags":["x_transferred","Issue Tracking"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-29547"},{"url":"https://github.com/advisories/GHSA-xhj4-5383-37r2"},{"url":"https://ubuntu.com/security/CVE-2020-29547","tags":["report"]},{"url":"https://uncensored.citadel.org/readfwd?go=Citadel","tags":["report"]},{"url":"https://nostarttls.secvuln.info/","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-29547","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2020-29547","description":"An issue was discovered in Citadel through webcit-926. Meddler-in-the-middle attackers can pipeline commands after POP3 STLS, IMAP STARTTLS, or SMTP STARTTLS commands, injecting cleartext commands into an encrypted user session. This can lead to credential disclosure.","status":"published","published":"2023-05-29T00:00:00Z","modified":"2025-01-14T17:52:53.266Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"adp"}],"cwes":["CWE-77"],"updated_at":"2026-11-02T14:35:55.460269Z"}],"euvd":[{"id":"EUVD-2020-21913","description":"An issue was discovered in Citadel through webcit-926. Meddler-in-the-middle attackers can pipeline commands after POP3 STLS, IMAP STARTTLS, or SMTP STARTTLS commands, injecting cleartext commands into an encrypted user session. This can lead to credential disclosure.","status":"published","published":"2023-05-29T00:00:00Z","modified":"2025-01-14T17:52:53Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-03T00:04:19.424496Z"}],"ghsa":[{"id":"GHSA-xhj4-5383-37r2","title":"An issue was discovered in Citadel through webcit-926. Meddler-in-the-middle attackers can...","description":"An issue was discovered in Citadel through webcit-926. Meddler-in-the-middle attackers can pipeline commands after POP3 STLS, IMAP STARTTLS, or SMTP STARTTLS commands, injecting cleartext commands into an encrypted user session. This can lead to credential disclosure.","status":"published","published":"2023-05-29T21:30:16Z","modified":"2024-04-04T04:22:39Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-77"],"updated_at":"2026-11-02T14:56:23.412856Z"}],"nvd":[{"id":"CVE-2020-29547","description":"An issue was discovered in Citadel through webcit-926. Meddler-in-the-middle attackers can pipeline commands after POP3 STLS, IMAP STARTTLS, or SMTP STARTTLS commands, injecting cleartext commands into an encrypted user session. This can lead to credential disclosure.","status":"published","published":"2023-05-29T19:15:09.413Z","modified":"2026-06-17T03:11:24.697Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-77"],"updated_at":"2026-11-02T14:06:47.910346Z"}],"osv":[{"id":"UBUNTU-CVE-2020-29547","description":"An issue was discovered in Citadel through webcit-926. Meddler-in-the-middle attackers can pipeline commands after POP3 STLS, IMAP STARTTLS, or SMTP STARTTLS commands, injecting cleartext commands into an encrypted user session. This can lead to credential disclosure.","status":"published","published":"2023-05-29T19:15:00Z","modified":"2025-10-24T04:48:56Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"},{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:24.541803Z"}]}}