{
  "cveId": "CVE-2026-40014",
  "url": "https://patchblox.com/security/cve/CVE-2026-40014",
  "summary": "CVE-2026-40014 is fixed in 12 products on 1 platform, first by SUSE-SU-2026:23595-1, released September 1, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "dovecot: An attacker that can send mail to a user can craft a message header that makes the IMAP THREAD command consume CPU di...",
  "description": "An attacker that can send mail to a user can craft a message header that makes the IMAP THREAD command consume CPU disproportionate to the size of the message. When a mail client issues a THREAD command on the affected mailbox, this can cause degradation or denial of service for IMAP. Monitor system for abnormal CPU usage, kill the offending process and remove the offending message from the affected mailbox. Update to non-vulnerable version. No publicly available exploits are known.",
  "published": "2026-08-28T12:16:28Z",
  "severity": "medium",
  "cvss": 6.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
  "epss": 0.00334,
  "epssPercentile": 0.26966,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "dovecot",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "1:2.3.19.1\u002Bdfsg1-2.1\u002Bdeb12u7",
      "fix": "DEBIAN-CVE-2026-40014",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-40014",
      "released": "2026-09-10T12:12:19Z"
    },
    {
      "platform": "linux",
      "product": "dovecot",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-6\u002Bdeb13u7",
      "fix": "DEBIAN-CVE-2026-40014",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-40014",
      "released": "2026-09-10T12:12:19Z"
    },
    {
      "platform": "linux",
      "product": "dovecot",
      "release": "Debian 14",
      "fixedVersion": "1:2.4.5\u002Bdfsg1-1",
      "fix": "DEBIAN-CVE-2026-40014",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-40014",
      "released": "2026-09-10T12:12:19Z"
    },
    {
      "platform": "linux",
      "product": "dovecot",
      "release": "Fedora 43",
      "fixedVersion": "1:2.4.5-1.fc43",
      "fix": "FEDORA-2026-E8A6485109",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-e8a6485109",
      "released": "2026-09-10T05:35:17Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "1:2.4.5-1.fc43",
      "fix": "FEDORA-2026-E8A6485109",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-e8a6485109",
      "released": "2026-09-10T05:35:17Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-debugsource",
      "release": "Fedora 43",
      "fixedVersion": "1:2.4.5-1.fc43",
      "fix": "FEDORA-2026-E8A6485109",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-e8a6485109",
      "released": "2026-09-10T05:35:17Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-devel",
      "release": "Fedora 43",
      "fixedVersion": "1:2.4.5-1.fc43",
      "fix": "FEDORA-2026-E8A6485109",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-e8a6485109",
      "released": "2026-09-10T05:35:17Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-mysql",
      "release": "Fedora 43",
      "fixedVersion": "1:2.4.5-1.fc43",
      "fix": "FEDORA-2026-E8A6485109",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-e8a6485109",
      "released": "2026-09-10T05:35:17Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-mysql-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "1:2.4.5-1.fc43",
      "fix": "FEDORA-2026-E8A6485109",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-e8a6485109",
      "released": "2026-09-10T05:35:17Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-pgsql",
      "release": "Fedora 43",
      "fixedVersion": "1:2.4.5-1.fc43",
      "fix": "FEDORA-2026-E8A6485109",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-e8a6485109",
      "released": "2026-09-10T05:35:17Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-pgsql-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "1:2.4.5-1.fc43",
      "fix": "FEDORA-2026-E8A6485109",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-e8a6485109",
      "released": "2026-09-10T05:35:17Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-pigeonhole",
      "release": "Fedora 43",
      "fixedVersion": "1:2.4.5-1.fc43",
      "fix": "FEDORA-2026-E8A6485109",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-e8a6485109",
      "released": "2026-09-10T05:35:17Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-pigeonhole-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "1:2.4.5-1.fc43",
      "fix": "FEDORA-2026-E8A6485109",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-e8a6485109",
      "released": "2026-09-10T05:35:17Z"
    },
    {
      "platform": "linux",
      "product": "dovecot23",
      "release": "sles 15.6",
      "fixedVersion": "2.3.21.1-150200.76.1",
      "fix": "SUSE-SU-2026:4139-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4139-1",
      "released": "2026-09-14T07:22:32Z"
    },
    {
      "platform": "linux",
      "product": "dovecot23",
      "release": "sles 15.7",
      "fixedVersion": "2.3.21.1-150200.76.1",
      "fix": "SUSE-SU-2026:4139-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4139-1",
      "released": "2026-09-14T07:22:32Z"
    },
    {
      "platform": "linux",
      "product": "dovecot24",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "2.4.4-160000.2.1",
      "fix": "OPENSUSE-SU-2026:21720-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21720-1",
      "released": "2026-09-01T14:18:02Z"
    },
    {
      "platform": "linux",
      "product": "dovecot24",
      "release": "sles 16.0",
      "fixedVersion": "2.4.4-160000.2.1",
      "fix": "SUSE-SU-2026:23595-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-23595-1",
      "released": "2026-09-01T14:12:16Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}