{
  "cveId": "CVE-2019-15892",
  "url": "https://patchblox.com/security/cve/CVE-2019-15892",
  "summary": "CVE-2019-15892 is fixed in 4 products on 1 platform, first by RHSA-2020:4756, released November 4, 2020. It is not reported as exploited. Patch Radar priority: High.",
  "title": "varnish: Varnish Cache is a high-performance HTTP accelerator",
  "description": "Varnish Cache is a high-performance HTTP accelerator. It stores web pages in memory so web servers don\u0027t have to create the same web page over and over again, giving the website a significant speed up.\n\nThe following packages have been upgraded to a later upstream version: varnish (6.0.6). (BZ#1795673)\n\nSecurity Fix(es):\n\n* varnish: denial of service handling certain crafted HTTP/1 requests (CVE-2019-15892)\n\n* varnish: remote clients may cause Varnish to assert and restart which could result in DoS (CVE-2020-11653)\n\n* varnish: not clearing pointer between two client requests leads to information disclosure (CVE-2019-20637)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Red Hat Enterprise Linux 8.3 Release Notes linked from the References section.",
  "published": "2020-11-04T00:00:00Z",
  "severity": "Moderate",
  "cvss": 7.5,
  "epss": 0.059,
  "epssPercentile": 0.93272,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "varnish",
      "release": "RHEL 8",
      "fixedVersion": "0:6.0.6-2.module\u002Bel8.3.0\u002B6843\u002Bb3b42fcc",
      "fix": "RHSA-2020:4756",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2020-4756",
      "released": "2020-11-04T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "varnish",
      "release": "ol 8",
      "fixedVersion": "0:6.0.6-2.module\u002Bel8.3.0\u002B7653\u002B45014445",
      "fix": "ELSA-2020-4756",
      "url": "https://patchblox.com/security/fix/linux/elsa-2020-4756",
      "released": "2020-11-10T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "varnish-devel",
      "release": "RHEL 8",
      "fixedVersion": "0:6.0.6-2.module\u002Bel8.3.0\u002B6843\u002Bb3b42fcc",
      "fix": "RHSA-2020:4756",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2020-4756",
      "released": "2020-11-04T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "varnish-devel",
      "release": "ol 8",
      "fixedVersion": "0:6.0.6-2.module\u002Bel8.3.0\u002B7653\u002B45014445",
      "fix": "ELSA-2020-4756",
      "url": "https://patchblox.com/security/fix/linux/elsa-2020-4756",
      "released": "2020-11-10T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "varnish-docs",
      "release": "RHEL 8",
      "fixedVersion": "0:6.0.6-2.module\u002Bel8.3.0\u002B6843\u002Bb3b42fcc",
      "fix": "RHSA-2020:4756",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2020-4756",
      "released": "2020-11-04T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "varnish-docs",
      "release": "ol 8",
      "fixedVersion": "0:6.0.6-2.module\u002Bel8.3.0\u002B7653\u002B45014445",
      "fix": "ELSA-2020-4756",
      "url": "https://patchblox.com/security/fix/linux/elsa-2020-4756",
      "released": "2020-11-10T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "varnish-modules",
      "release": "RHEL 8",
      "fixedVersion": "0:0.15.0-5.module\u002Bel8.3.0\u002B6843\u002Bb3b42fcc",
      "fix": "RHSA-2020:4756",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2020-4756",
      "released": "2020-11-04T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "varnish-modules",
      "release": "ol 8",
      "fixedVersion": "0:0.15.0-5.module\u002Bel8.3.0\u002B7653\u002B45014445",
      "fix": "ELSA-2020-4756",
      "url": "https://patchblox.com/security/fix/linux/elsa-2020-4756",
      "released": "2020-11-10T00:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}