{
  "fix": "RLSA-2026:67908",
  "url": "https://patchblox.com/security/fix/linux/rlsa-2026-67908",
  "summary": "RLSA-2026:67908, released September 17, 2026, fixes 6 CVEs in libevent (version 0:2.1.8-11.el8_10). None of them is reported as exploited. Patch Radar priority: Urgent.",
  "platform": "linux",
  "type": "advisory",
  "title": "libevent security update",
  "released": "2026-09-17T12:01:09Z",
  "priority": "Urgent",
  "priorityTier": 2,
  "priorityReason": "Closes CVE-2026-63385, rated Critical",
  "supported": true,
  "cveCount": 6,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.01991,
  "maxCvss": 8.6,
  "vendorAdvisory": "https://errata.rockylinux.org/RLSA-2026:67908",
  "appliesTo": [
    {
      "product": "libevent",
      "productUrl": "https://patchblox.com/security/product/linux/libevent",
      "release": "rocky 8",
      "fixedVersion": "0:2.1.8-11.el8_10",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2026-63385",
      "url": "https://patchblox.com/security/cve/CVE-2026-63385",
      "title": "Libevent: HTTP header handling bugs create risk of access control bypass.",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 8.6,
      "epss": 0.01292,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-63382",
      "url": "https://patchblox.com/security/cve/CVE-2026-63382",
      "title": "libevent: Libevent is an event notification library",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.6,
      "epss": 0.01991,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-63383",
      "url": "https://patchblox.com/security/cve/CVE-2026-63383",
      "title": "Libevent: decode_tag_internal() can lead to out-of-bounds read",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.6,
      "epss": 0.00488,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-63384",
      "url": "https://patchblox.com/security/cve/CVE-2026-63384",
      "title": "Libevent: \u0060evtag_unmarshal_header()\u0060 decodes a wire \u0060uint32\u0060 length into a signed \u0060int\u0060 return value.",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 8.6,
      "epss": 0.00488,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-63387",
      "url": "https://patchblox.com/security/cve/CVE-2026-63387",
      "title": "Libevent: Off-by-one stack buffer overflow in dnsname_to_labels via crafted DNS server response",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 8.6,
      "epss": 0.00416,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-63388",
      "url": "https://patchblox.com/security/cve/CVE-2026-63388",
      "title": "Libevent: Heap out-of-bounds write in bufferevent_socket_set_conn_address_ reachable via AF_UNIX accept",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.6,
      "epss": 0.00142,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "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"
  }
}