{"id":"CVE-2019-11356","aliases":["DEBIAN-CVE-2019-11356","DSA-4458-1","EUVD-2019-3035","GHSA-v5c4-xfxj-8x84","MGASA-2019-0219","RHSA-2019:1771","UBUNTU-CVE-2019-11356","USN-4566-1","openSUSE-SU-2025:14968-1"],"status":"published","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...","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.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.07622,"percentile":0.94601,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-119","CWE-787"],"published":"2019-06-03T19:44:30Z","modified":"2026-10-24T10:30:36Z","fixes":[{"ecosystem":"Debian:12","package":"cyrus-imapd","fixed_in":["3.0.8-6"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"cyrus-imapd","fixed_in":["3.0.8-6"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"cyrus-imapd","fixed_in":["3.0.8-6"],"sources":["osv"]},{"ecosystem":"Debian:9","package":"cyrus-imapd","fixed_in":["2.5.10-3+deb9u1"],"sources":["osv"]},{"ecosystem":"Mageia:6","package":"cyrus-imapd","fixed_in":["2.5.11-1.1.mga6"],"sources":["osv"]},{"ecosystem":"Mageia:7","package":"cyrus-imapd","fixed_in":["2.5.11-7.1.mga7"],"sources":["osv"]},{"ecosystem":"Red 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Notes","Vendor Advisory","advisory","report"]},{"url":"https://www.cyrusimap.org/imap/download/release-notes/3.0/index.html","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory","advisory","report"]},{"url":"https://www.cyrusimap.org/imap/download/release-notes/2.5/x/2.5.13.html","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory","advisory","report"]},{"url":"https://www.cyrusimap.org/imap/download/release-notes/3.0/x/3.0.10.html","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory","advisory","report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGO43JS7IFDNITHXOOHOP6JHRKRDIYY6/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PICSZDC3UGEUZ27VXGGM6OFI67D3KKLZ/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://www.debian.org/security/2019/dsa-4458","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Third Party Advisory","advisory"]},{"url":"https://seclists.org/bugtraq/2019/Jun/9","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2019:1771","tags":["vendor-advisory","x_refsource_REDHAT","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://usn.ubuntu.com/4566-1/","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-11356","tags":["advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGO43JS7IFDNITHXOOHOP6JHRKRDIYY6"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PICSZDC3UGEUZ27VXGGM6OFI67D3KKLZ"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IGO43JS7IFDNITHXOOHOP6JHRKRDIYY6"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PICSZDC3UGEUZ27VXGGM6OFI67D3KKLZ"},{"url":"https://usn.ubuntu.com/4566-1"},{"url":"https://github.com/advisories/GHSA-v5c4-xfxj-8x84"},{"url":"https://security-tracker.debian.org/tracker/CVE-2019-11356","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2019-0219.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=25134","tags":["report"]},{"url":"https://access.redhat.com/security/updates/classification/#important","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1717828","tags":["report"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2019/rhsa-2019_1771.json","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2019-11356","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2019-11356","tags":["advisory","report"]},{"url":"https://ubuntu.com/security/CVE-2019-11356","tags":["report"]},{"url":"https://github.com/cyrusimap/cyrus-imapd/commit/a5779db8163b99463e25e7c476f9cbba438b65f3","tags":["report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IGO43JS7IFDNITHXOOHOP6JHRKRDIYY6/","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-4566-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2019-19783","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2019-11356","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-18928","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-19783","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2024-34055","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2019-11356","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.","status":"published","published":"2019-06-03T19:44:30Z","modified":"2024-08-04T22:48:09.187Z","updated_at":"2026-11-02T14:32:22.432545Z"}],"euvd":[{"id":"EUVD-2019-3035","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.","status":"published","published":"2019-06-03T19:44:30Z","modified":"2024-08-04T22:48:09Z","updated_at":"2026-11-03T02:40:49.362838Z"}],"ghsa":[{"id":"GHSA-v5c4-xfxj-8x84","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...","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.","status":"published","published":"2022-05-24T16:46:59Z","modified":"2024-04-04T00:50:50Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-119","CWE-787"],"updated_at":"2026-11-02T14:55:52.724602Z"}],"nvd":[{"id":"CVE-2019-11356","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.","status":"published","published":"2019-06-03T20:29:00.297Z","modified":"2026-06-17T02:12:45.887Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:05:14.729983Z"}],"osv":[{"id":"CVE-2019-11356","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.","status":"published","published":"2019-06-03T20:29:00.297Z","modified":"2026-10-24T10:30:36.984451703Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:10.383287Z"},{"id":"DEBIAN-CVE-2019-11356","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.","status":"published","published":"2019-06-03T20:29:00.297Z","modified":"2026-09-21T07:01:27.145892585Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:45:31.170944Z"},{"id":"RHSA-2019:1771","title":"Red Hat Security Advisory: cyrus-imapd security update","status":"published","published":"2024-09-16T02:38:20Z","modified":"2025-11-22T11:44:13Z","cvss":[{"version":"3.0","score":5.6,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"updated_at":"2026-11-02T15:53:06.0195Z"},{"id":"UBUNTU-CVE-2019-11356","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.","status":"published","published":"2019-06-03T20:29:00Z","modified":"2026-04-22T12:06:30.110966Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"},{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:54:19.202697Z"},{"id":"DSA-4458-1","title":"cyrus-imapd - security update","status":"published","published":"2019-06-08T00:00:00Z","modified":"2026-03-09T02:11:39.313289Z","updated_at":"2026-11-02T15:46:16.862196Z"},{"id":"MGASA-2019-0219","title":"Updated cyrus-imapd packages fix security vulnerability","description":"Updated cyrus-imapd package fixes security vulnerability:\n\nIt was discovered that cyrus-imapd had a buffer overflow in CalDAV request\nhandling triggered by a long iCalendar property name (CVE-2019-11356).\n","status":"published","published":"2019-08-10T00:12:28Z","modified":"2026-04-16T04:42:59.060263844Z","updated_at":"2026-11-02T15:49:40.793816Z"},{"id":"openSUSE-SU-2025:14968-1","title":"cyradm-3.8.4-1.1 on GA media","description":"These are all security issues fixed in the cyradm-3.8.4-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2025-04-04T00:00:00Z","modified":"2026-02-04T04:07:09.050202Z","updated_at":"2026-11-02T16:58:37.399567Z"},{"id":"USN-4566-1","title":"cyrus-imapd vulnerabilities","description":"It was dicovered that Cyrus IMAP Server could execute arbitrary code via a\ncrafted HTTP PUT operation for an event with a long iCalendar property name.\nAn attacker could use this vulnerability to cause a crash or possibly execute\narbitrary code. (CVE-2019-11356)\n\nIt was discovered that the Cyrus IMAP Server allow users to create any\nmailbox with administrative privileges. A local attacker could use this to\nobtain sensitive information. (CVE-2019-19783)\n","status":"published","published":"2020-10-05T17:25:10Z","modified":"2026-04-22T10:08:24.363061Z","updated_at":"2026-11-02T16:58:15.159055Z"}]}}