{"id":"CVE-2019-11356","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-11356","generatedAt":"2026-10-28T20:23:41.940Z","title":"The CalDAV feature in httpd in Cyrus IMAP 2.5.x through 2.5.12 and 3.0.x through 3.0.9 allows remote attackers to execute arbitrary code via a crafted HTTP PUT operation for an event with a long iCalendar property name.","description":"The CalDAV feature in httpd in Cyrus IMAP 2.5.x through 2.5.12 and 3.0.x through 3.0.9 allows remote attackers to execute arbitrary code via a crafted HTTP PUT operation for an event with a long iCalendar property name.","published":"2019-06-03T20:29:00.000Z","lastModified":"2026-06-17T02:12:46.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-787"],"affected":["cyrus/imap","fedoraproject/fedora","debian/debian linux","canonical/ubuntu linux","redhat/enterprise linux","redhat/enterprise linux eus","redhat/enterprise linux server aus","redhat/enterprise linux server tus"],"epss":{"score":0.07622,"percentile":0.94531,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (7.62%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://access.redhat.com/errata/RHSA-2019:1771","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGO43JS7IFDNITHXOOHOP6JHRKRDIYY6/","source":"cve@mitre.org"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PICSZDC3UGEUZ27VXGGM6OFI67D3KKLZ/","source":"cve@mitre.org"},{"url":"https://seclists.org/bugtraq/2019/Jun/9","tags":["Mailing List","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/4566-1/","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://www.cyrusimap.org/imap/download/release-notes/2.5/index.html","tags":["Release Notes","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://www.cyrusimap.org/imap/download/release-notes/2.5/x/2.5.13.html","tags":["Release Notes","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://www.cyrusimap.org/imap/download/release-notes/3.0/index.html","tags":["Release Notes","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://www.cyrusimap.org/imap/download/release-notes/3.0/x/3.0.10.html","tags":["Release Notes","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://www.debian.org/security/2019/dsa-4458","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://access.redhat.com/errata/RHSA-2019:1771","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGO43JS7IFDNITHXOOHOP6JHRKRDIYY6/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PICSZDC3UGEUZ27VXGGM6OFI67D3KKLZ/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://seclists.org/bugtraq/2019/Jun/9","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/4566-1/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cyrusimap.org/imap/download/release-notes/2.5/index.html","tags":["Release Notes","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cyrusimap.org/imap/download/release-notes/2.5/x/2.5.13.html","tags":["Release Notes","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cyrusimap.org/imap/download/release-notes/3.0/index.html","tags":["Release Notes","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cyrusimap.org/imap/download/release-notes/3.0/x/3.0.10.html","tags":["Release Notes","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2019/dsa-4458","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-11356","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}