{
  "fix": "ALAS2023-2026-3109",
  "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3109",
  "summary": "ALAS2023-2026-3109, released September 28, 2026, fixes 6 CVEs across 10 products. None of them is reported as exploited. Patch Radar priority: High.",
  "platform": "linux",
  "type": "advisory",
  "title": "Security update for 10 packages",
  "released": "2026-09-28T09:00:00Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2026-42391, high severity",
  "supported": true,
  "cveCount": 6,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.00449,
  "maxCvss": 9.1,
  "vendorAdvisory": "https://alas.aws.amazon.com/AL2023/ALAS-2026-3109.html",
  "appliesTo": [
    {
      "product": "dovecot",
      "productUrl": "https://patchblox.com/security/product/linux/dovecot",
      "release": "amzn 2023",
      "fixedVersion": "1:2.3.20-1.amzn2023.0.4",
      "supported": true
    },
    {
      "product": "dovecot-debuginfo",
      "productUrl": "https://patchblox.com/security/product/linux/dovecot-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:2.3.20-1.amzn2023.0.4",
      "supported": true
    },
    {
      "product": "dovecot-debugsource",
      "productUrl": "https://patchblox.com/security/product/linux/dovecot-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "1:2.3.20-1.amzn2023.0.4",
      "supported": true
    },
    {
      "product": "dovecot-devel",
      "productUrl": "https://patchblox.com/security/product/linux/dovecot-devel",
      "release": "amzn 2023",
      "fixedVersion": "1:2.3.20-1.amzn2023.0.4",
      "supported": true
    },
    {
      "product": "dovecot-mysql",
      "productUrl": "https://patchblox.com/security/product/linux/dovecot-mysql",
      "release": "amzn 2023",
      "fixedVersion": "1:2.3.20-1.amzn2023.0.4",
      "supported": true
    },
    {
      "product": "dovecot-mysql-debuginfo",
      "productUrl": "https://patchblox.com/security/product/linux/dovecot-mysql-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:2.3.20-1.amzn2023.0.4",
      "supported": true
    },
    {
      "product": "dovecot-pgsql",
      "productUrl": "https://patchblox.com/security/product/linux/dovecot-pgsql",
      "release": "amzn 2023",
      "fixedVersion": "1:2.3.20-1.amzn2023.0.4",
      "supported": true
    },
    {
      "product": "dovecot-pgsql-debuginfo",
      "productUrl": "https://patchblox.com/security/product/linux/dovecot-pgsql-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:2.3.20-1.amzn2023.0.4",
      "supported": true
    },
    {
      "product": "dovecot-pigeonhole",
      "productUrl": "https://patchblox.com/security/product/linux/dovecot-pigeonhole",
      "release": "amzn 2023",
      "fixedVersion": "1:2.3.20-1.amzn2023.0.4",
      "supported": true
    },
    {
      "product": "dovecot-pigeonhole-debuginfo",
      "productUrl": "https://patchblox.com/security/product/linux/dovecot-pigeonhole-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:2.3.20-1.amzn2023.0.4",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2026-42391",
      "url": "https://patchblox.com/security/cve/CVE-2026-42391",
      "title": "dovecot: An unauthenticated attacker can send an IMAP ID command with a very large number of parameters before logging in, whi...",
      "priority": "High",
      "severity": "important",
      "cvss": 9.1,
      "epss": 0.00449,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-27852",
      "url": "https://patchblox.com/security/cve/CVE-2026-27852",
      "title": "dovecot: Dovecot is an IMAP server for Linux and other UNIX-like systems, written primarily with security in mind",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.1,
      "epss": 0.0043,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-42007",
      "url": "https://patchblox.com/security/cve/CVE-2026-42007",
      "title": "dovecot: An attacker that has valid credentials can use a Sieve script with the editheader extension to trigger a use-after-fr...",
      "priority": "High",
      "severity": "important",
      "cvss": 9.1,
      "epss": 0.00345,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-40018",
      "url": "https://patchblox.com/security/cve/CVE-2026-40018",
      "title": "dovecot: None None None No publicly available exploits are known.",
      "priority": "High",
      "severity": "important",
      "cvss": 9.1,
      "epss": 0.00317,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-73208",
      "url": "https://patchblox.com/security/cve/CVE-2026-73208",
      "title": "dovecot: An attacker that holds a token intended for a different purpose can authenticate, because when an OAuth2 token respon...",
      "priority": "High",
      "severity": "important",
      "cvss": 9.1,
      "epss": 0.00312,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-42008",
      "url": "https://patchblox.com/security/cve/CVE-2026-42008",
      "title": "dovecot: Forwarding information received from a host listed as a trusted proxy is not kept separate from Dovecot\u0027s own authent...",
      "priority": "Routine",
      "severity": "medium",
      "cvss": 4.3,
      "epss": 0.00236,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-10T13:56:55Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}