{
  "cveId": "CVE-2019-0199",
  "url": "https://patchblox.com/security/cve/CVE-2019-0199",
  "summary": "CVE-2019-0199 is fixed in 8 products on 1 platform, first by libtomcat8-embed-java 8.5.39-1ubuntu1~18.04.1, released April 10, 2019. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "libtomcat8-embed-java: The HTTP/2 implementation in Apache Tomcat 9.0.0.M1 to 9.0.14 and 8.5.0 to 8.5.37 accepted streams with excessive num...",
  "description": "The HTTP/2 implementation in Apache Tomcat 9.0.0.M1 to 9.0.14 and 8.5.0 to 8.5.37 accepted streams with excessive numbers of SETTINGS frames and also permitted clients to keep streams open without reading/writing request/response data. By keeping streams open for requests that utilised the Servlet API\u0027s blocking I/O, clients were able to cause server-side threads to block eventually leading to thread exhaustion and a DoS.",
  "published": "2019-04-10T08:29:00Z",
  "severity": "Medium",
  "epss": 0.72855,
  "epssPercentile": 0.99455,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libtomcat8-embed-java",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "8.5.39-1ubuntu1~18.04.1",
      "fix": "libtomcat8-embed-java 8.5.39-1ubuntu1~18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libtomcat8-embed-java-8.5.39-1ubuntu1-18.04.1",
      "released": "2019-04-10T08:29:00Z"
    },
    {
      "platform": "linux",
      "product": "libtomcat8-java",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "8.5.39-1ubuntu1~18.04.1",
      "fix": "libtomcat8-java 8.5.39-1ubuntu1~18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libtomcat8-java-8.5.39-1ubuntu1-18.04.1",
      "released": "2019-04-10T08:29:00Z"
    },
    {
      "platform": "linux",
      "product": "tomcat8",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "8.5.39-1ubuntu1~18.04.1",
      "fix": "tomcat8 8.5.39-1ubuntu1~18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-tomcat8-8.5.39-1ubuntu1-18.04.1",
      "released": "2019-04-10T08:29:00Z"
    },
    {
      "platform": "linux",
      "product": "tomcat8-admin",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "8.5.39-1ubuntu1~18.04.1",
      "fix": "tomcat8-admin 8.5.39-1ubuntu1~18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-tomcat8-admin-8.5.39-1ubuntu1-18.04.1",
      "released": "2019-04-10T08:29:00Z"
    },
    {
      "platform": "linux",
      "product": "tomcat8-common",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "8.5.39-1ubuntu1~18.04.1",
      "fix": "tomcat8-common 8.5.39-1ubuntu1~18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-tomcat8-common-8.5.39-1ubuntu1-18.04.1",
      "released": "2019-04-10T08:29:00Z"
    },
    {
      "platform": "linux",
      "product": "tomcat8-docs",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "8.5.39-1ubuntu1~18.04.1",
      "fix": "tomcat8-docs 8.5.39-1ubuntu1~18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-tomcat8-docs-8.5.39-1ubuntu1-18.04.1",
      "released": "2019-04-10T08:29:00Z"
    },
    {
      "platform": "linux",
      "product": "tomcat8-examples",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "8.5.39-1ubuntu1~18.04.1",
      "fix": "tomcat8-examples 8.5.39-1ubuntu1~18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-tomcat8-examples-8.5.39-1ubuntu1-18.04.1",
      "released": "2019-04-10T08:29:00Z"
    },
    {
      "platform": "linux",
      "product": "tomcat8-user",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "8.5.39-1ubuntu1~18.04.1",
      "fix": "tomcat8-user 8.5.39-1ubuntu1~18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-tomcat8-user-8.5.39-1ubuntu1-18.04.1",
      "released": "2019-04-10T08:29:00Z"
    }
  ],
  "noFixYet": [],
  "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"
  }
}