{
  "cveId": "CVE-2026-27851",
  "url": "https://patchblox.com/security/cve/CVE-2026-27851",
  "summary": "CVE-2026-27851 is fixed in 17 products on 1 platform, first by dovecot-auth-lua 1:2.4.1\u002Bdfsg1-5ubuntu4.2, released May 12, 2026. It is not reported as exploited. Patch Radar priority: Urgent.",
  "title": "dovecot: When safe filter is used with variable expansion, all following pipelines on the same string are incorrectly interpre...",
  "description": "When safe filter is used with variable expansion, all following pipelines on the same string are incorrectly interpreted as safe too, enabling unsafe data to be unescaped. This can enable SQL / LDAP injection attacks when used in authentication. Avoid using safe filter until on fixed version. No publicly available exploits are known.",
  "published": "2026-05-12T07:16:00Z",
  "severity": "critical",
  "cvss": 9.1,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
  "epss": 0.00406,
  "epssPercentile": 0.35095,
  "priority": "Urgent",
  "priorityTier": 2,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "dovecot",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-6\u002Bdeb13u6",
      "fix": "DEBIAN-CVE-2026-27851",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-27851",
      "released": "2026-05-27T17:38:13Z"
    },
    {
      "platform": "linux",
      "product": "dovecot",
      "release": "Debian 14",
      "fixedVersion": "1:2.4.4\u002Bdfsg1-1",
      "fix": "DEBIAN-CVE-2026-27851",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-27851",
      "released": "2026-05-27T17:38:13Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-auth-lua",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-5ubuntu4.2",
      "fix": "dovecot-auth-lua 1:2.4.1\u002Bdfsg1-5ubuntu4.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-dovecot-auth-lua-1-2.4.1-dfsg1-5ubuntu4.2",
      "released": "2026-05-12T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-auth-lua",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1:2.4.2\u002Bdfsg1-3ubuntu2.1",
      "fix": "dovecot-auth-lua 1:2.4.2\u002Bdfsg1-3ubuntu2.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-dovecot-auth-lua-1-2.4.2-dfsg1-3ubuntu2.1",
      "released": "2026-05-12T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-core",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-5ubuntu4.2",
      "fix": "dovecot-core 1:2.4.1\u002Bdfsg1-5ubuntu4.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-dovecot-core-1-2.4.1-dfsg1-5ubuntu4.2",
      "released": "2026-05-12T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-core",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1:2.4.2\u002Bdfsg1-3ubuntu2.1",
      "fix": "dovecot-core 1:2.4.2\u002Bdfsg1-3ubuntu2.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-dovecot-core-1-2.4.2-dfsg1-3ubuntu2.1",
      "released": "2026-05-12T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-flatcurve",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-5ubuntu4.2",
      "fix": "dovecot-flatcurve 1:2.4.1\u002Bdfsg1-5ubuntu4.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-dovecot-flatcurve-1-2.4.1-dfsg1-5ubuntu4.2",
      "released": "2026-05-12T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-flatcurve",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1:2.4.2\u002Bdfsg1-3ubuntu2.1",
      "fix": "dovecot-flatcurve 1:2.4.2\u002Bdfsg1-3ubuntu2.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-dovecot-flatcurve-1-2.4.2-dfsg1-3ubuntu2.1",
      "released": "2026-05-12T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-gssapi",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-5ubuntu4.2",
      "fix": "dovecot-gssapi 1:2.4.1\u002Bdfsg1-5ubuntu4.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-dovecot-gssapi-1-2.4.1-dfsg1-5ubuntu4.2",
      "released": "2026-05-12T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-gssapi",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1:2.4.2\u002Bdfsg1-3ubuntu2.1",
      "fix": "dovecot-gssapi 1:2.4.2\u002Bdfsg1-3ubuntu2.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-dovecot-gssapi-1-2.4.2-dfsg1-3ubuntu2.1",
      "released": "2026-05-12T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-imapd",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-5ubuntu4.2",
      "fix": "dovecot-imapd 1:2.4.1\u002Bdfsg1-5ubuntu4.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-dovecot-imapd-1-2.4.1-dfsg1-5ubuntu4.2",
      "released": "2026-05-12T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-imapd",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1:2.4.2\u002Bdfsg1-3ubuntu2.1",
      "fix": "dovecot-imapd 1:2.4.2\u002Bdfsg1-3ubuntu2.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-dovecot-imapd-1-2.4.2-dfsg1-3ubuntu2.1",
      "released": "2026-05-12T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-ldap",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-5ubuntu4.2",
      "fix": "dovecot-ldap 1:2.4.1\u002Bdfsg1-5ubuntu4.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-dovecot-ldap-1-2.4.1-dfsg1-5ubuntu4.2",
      "released": "2026-05-12T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-ldap",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1:2.4.2\u002Bdfsg1-3ubuntu2.1",
      "fix": "dovecot-ldap 1:2.4.2\u002Bdfsg1-3ubuntu2.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-dovecot-ldap-1-2.4.2-dfsg1-3ubuntu2.1",
      "released": "2026-05-12T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-lmtpd",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-5ubuntu4.2",
      "fix": "dovecot-lmtpd 1:2.4.1\u002Bdfsg1-5ubuntu4.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-dovecot-lmtpd-1-2.4.1-dfsg1-5ubuntu4.2",
      "released": "2026-05-12T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-lmtpd",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1:2.4.2\u002Bdfsg1-3ubuntu2.1",
      "fix": "dovecot-lmtpd 1:2.4.2\u002Bdfsg1-3ubuntu2.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-dovecot-lmtpd-1-2.4.2-dfsg1-3ubuntu2.1",
      "released": "2026-05-12T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-managesieved",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-5ubuntu4.2",
      "fix": "dovecot-managesieved 1:2.4.1\u002Bdfsg1-5ubuntu4.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-dovecot-managesieved-1-2.4.1-dfsg1-5ubuntu4.2",
      "released": "2026-05-12T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-managesieved",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1:2.4.2\u002Bdfsg1-3ubuntu2.1",
      "fix": "dovecot-managesieved 1:2.4.2\u002Bdfsg1-3ubuntu2.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-dovecot-managesieved-1-2.4.2-dfsg1-3ubuntu2.1",
      "released": "2026-05-12T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-mysql",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-5ubuntu4.2",
      "fix": "dovecot-mysql 1:2.4.1\u002Bdfsg1-5ubuntu4.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-dovecot-mysql-1-2.4.1-dfsg1-5ubuntu4.2",
      "released": "2026-05-12T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-mysql",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1:2.4.2\u002Bdfsg1-3ubuntu2.1",
      "fix": "dovecot-mysql 1:2.4.2\u002Bdfsg1-3ubuntu2.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-dovecot-mysql-1-2.4.2-dfsg1-3ubuntu2.1",
      "released": "2026-05-12T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-pgsql",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-5ubuntu4.2",
      "fix": "dovecot-pgsql 1:2.4.1\u002Bdfsg1-5ubuntu4.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-dovecot-pgsql-1-2.4.1-dfsg1-5ubuntu4.2",
      "released": "2026-05-12T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-pgsql",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1:2.4.2\u002Bdfsg1-3ubuntu2.1",
      "fix": "dovecot-pgsql 1:2.4.2\u002Bdfsg1-3ubuntu2.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-dovecot-pgsql-1-2.4.2-dfsg1-3ubuntu2.1",
      "released": "2026-05-12T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-pop3d",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-5ubuntu4.2",
      "fix": "dovecot-pop3d 1:2.4.1\u002Bdfsg1-5ubuntu4.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-dovecot-pop3d-1-2.4.1-dfsg1-5ubuntu4.2",
      "released": "2026-05-12T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-pop3d",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1:2.4.2\u002Bdfsg1-3ubuntu2.1",
      "fix": "dovecot-pop3d 1:2.4.2\u002Bdfsg1-3ubuntu2.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-dovecot-pop3d-1-2.4.2-dfsg1-3ubuntu2.1",
      "released": "2026-05-12T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-sieve",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-5ubuntu4.2",
      "fix": "dovecot-sieve 1:2.4.1\u002Bdfsg1-5ubuntu4.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-dovecot-sieve-1-2.4.1-dfsg1-5ubuntu4.2",
      "released": "2026-05-12T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-sieve",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1:2.4.2\u002Bdfsg1-3ubuntu2.1",
      "fix": "dovecot-sieve 1:2.4.2\u002Bdfsg1-3ubuntu2.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-dovecot-sieve-1-2.4.2-dfsg1-3ubuntu2.1",
      "released": "2026-05-12T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-solr",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-5ubuntu4.2",
      "fix": "dovecot-solr 1:2.4.1\u002Bdfsg1-5ubuntu4.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-dovecot-solr-1-2.4.1-dfsg1-5ubuntu4.2",
      "released": "2026-05-12T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-solr",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1:2.4.2\u002Bdfsg1-3ubuntu2.1",
      "fix": "dovecot-solr 1:2.4.2\u002Bdfsg1-3ubuntu2.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-dovecot-solr-1-2.4.2-dfsg1-3ubuntu2.1",
      "released": "2026-05-12T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-sqlite",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-5ubuntu4.2",
      "fix": "dovecot-sqlite 1:2.4.1\u002Bdfsg1-5ubuntu4.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-dovecot-sqlite-1-2.4.1-dfsg1-5ubuntu4.2",
      "released": "2026-05-12T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-sqlite",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1:2.4.2\u002Bdfsg1-3ubuntu2.1",
      "fix": "dovecot-sqlite 1:2.4.2\u002Bdfsg1-3ubuntu2.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-dovecot-sqlite-1-2.4.2-dfsg1-3ubuntu2.1",
      "released": "2026-05-12T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-submissiond",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-5ubuntu4.2",
      "fix": "dovecot-submissiond 1:2.4.1\u002Bdfsg1-5ubuntu4.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-dovecot-submissiond-1-2.4.1-dfsg1-5ubuntu4.2",
      "released": "2026-05-12T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-submissiond",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1:2.4.2\u002Bdfsg1-3ubuntu2.1",
      "fix": "dovecot-submissiond 1:2.4.2\u002Bdfsg1-3ubuntu2.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-dovecot-submissiond-1-2.4.2-dfsg1-3ubuntu2.1",
      "released": "2026-05-12T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "dovecot24",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "2.4.4-160000.1.1",
      "fix": "OPENSUSE-SU-2026:21109-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21109-1",
      "released": "2026-06-19T17:08:41Z"
    },
    {
      "platform": "linux",
      "product": "dovecot24",
      "release": "sles 16.0",
      "fixedVersion": "2.4.4-160000.1.1",
      "fix": "SUSE-SU-2026:22185-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-22185-1",
      "released": "2026-06-19T17:04:26Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T13:31:49Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}