{
  "fix": "RLSA-2026:76763",
  "url": "https://patchblox.com/security/fix/linux/rlsa-2026-76763",
  "summary": "RLSA-2026:76763, released October 7, 2026, fixes 8 CVEs in dovecot (version 1:2.3.16-16.el8_10). None of them is reported as exploited. Patch Radar priority: High.",
  "platform": "linux",
  "type": "advisory",
  "title": "dovecot security update",
  "released": "2026-10-07T06:01:37Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2026-33263, high severity",
  "supported": true,
  "cveCount": 8,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.00554,
  "maxCvss": 9.1,
  "vendorAdvisory": "https://errata.rockylinux.org/RLSA-2026:76763",
  "appliesTo": [
    {
      "product": "dovecot",
      "productUrl": "https://patchblox.com/security/product/linux/dovecot",
      "release": "rocky 8",
      "fixedVersion": "1:2.3.16-16.el8_10",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2026-33263",
      "url": "https://patchblox.com/security/cve/CVE-2026-33263",
      "title": "dovecot: When mail_max_userip_connections is set (default 10) and reached, submission-login can crash with epoll() panic cause...",
      "priority": "High",
      "severity": "important",
      "cvss": 9.1,
      "epss": 0.00554,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-33605",
      "url": "https://patchblox.com/security/cve/CVE-2026-33605",
      "title": "dovecot: An unauthenticated attacker can crash the ManageSieve login process by sending a small malformed command before authe...",
      "priority": "High",
      "severity": "important",
      "cvss": 9.1,
      "epss": 0.00449,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "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-2026-40019",
      "url": "https://patchblox.com/security/cve/CVE-2026-40019",
      "title": "dovecot: An unauthenticated attacker can send a truncated quoted argument to the ManageSieve login process, which makes it spi...",
      "priority": "High",
      "severity": "important",
      "cvss": 9.1,
      "epss": 0.00371,
      "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
    }
  ],
  "dataAsOf": "2026-11-07T18:46:35Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}