{
  "cveId": "CVE-2026-52687",
  "url": "https://patchblox.com/security/cve/CVE-2026-52687",
  "summary": "CVE-2026-52687 is fixed in 3 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 has valid credentials can select a compression algorithm for the IMAP connection whose decompression...",
  "description": "An attacker that has valid credentials can select a compression algorithm for the IMAP connection whose decompression state requires a large amount of memory, and open several such connections. The memory limit of the process is reached with only a few connections, terminating the process and all connections it handles, which can cause degradation or denial of service for IMAP. Disable IMAP compression. Alternatively limit the number of connections handled by a single imap-login process, though this has a performance impact. Update to non-vulnerable version. No publicly available exploits are known.",
  "published": "2026-08-28T12:16:30Z",
  "severity": "medium",
  "cvss": 6.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00398,
  "epssPercentile": 0.34276,
  "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-2026-52687",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-52687",
      "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-2026-52687",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-52687",
      "released": "2026-09-10T12:12:19Z"
    },
    {
      "platform": "linux",
      "product": "dovecot",
      "release": "Debian 14",
      "fixedVersion": "1:2.4.5\u002Bdfsg1-1",
      "fix": "DEBIAN-CVE-2026-52687",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-52687",
      "released": "2026-09-10T12:12:19Z"
    },
    {
      "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": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}