{
  "cveId": "CVE-2020-15811",
  "url": "https://patchblox.com/security/cve/CVE-2020-15811",
  "summary": "CVE-2020-15811 is fixed in 8 products on 1 platform, first by squid 3.5.27-1ubuntu1.9, released August 24, 2020. It is not reported as exploited. Patch Radar priority: High.",
  "title": "squid: Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.\n\nSec...",
  "description": "Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.\n\nSecurity Fix(es):\n\n* squid: HTTP Request Smuggling could result in cache poisoning (CVE-2020-15810)\n\n* squid: HTTP Request Splitting could result in cache poisoning (CVE-2020-15811)\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.",
  "published": "2020-08-23T17:00:00Z",
  "severity": "Important",
  "cvss": 9.6,
  "epss": 0.04069,
  "epssPercentile": 0.9074,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libecap",
      "release": "RHEL 8",
      "fixedVersion": "0:1.0.1-2.module\u002Bel8.1.0\u002B4044\u002B36416a77",
      "fix": "RHSA-2020:3623",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2020-3623",
      "released": "2020-09-03T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libecap",
      "release": "ol 8",
      "fixedVersion": "0:1.0.1-2.module\u002Bel8.1.0\u002B5405\u002B03b963f4",
      "fix": "ELSA-2020-3623",
      "url": "https://patchblox.com/security/fix/linux/elsa-2020-3623",
      "released": "2020-09-04T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libecap-devel",
      "release": "RHEL 8",
      "fixedVersion": "0:1.0.1-2.module\u002Bel8.1.0\u002B4044\u002B36416a77",
      "fix": "RHSA-2020:3623",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2020-3623",
      "released": "2020-09-03T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libecap-devel",
      "release": "ol 8",
      "fixedVersion": "0:1.0.1-2.module\u002Bel8.1.0\u002B5405\u002B03b963f4",
      "fix": "ELSA-2020-3623",
      "url": "https://patchblox.com/security/fix/linux/elsa-2020-3623",
      "released": "2020-09-04T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "squid",
      "release": "RHEL 8",
      "fixedVersion": "7:4.4-8.module\u002Bel8.2.0\u002B7834\u002Bb8ecaeef.2",
      "fix": "RHSA-2020:3623",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2020-3623",
      "released": "2020-09-03T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "squid",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "3.5.27-1ubuntu1.9",
      "fix": "squid 3.5.27-1ubuntu1.9",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-squid-3.5.27-1ubuntu1.9",
      "released": "2020-08-24T11:15:00Z"
    },
    {
      "platform": "linux",
      "product": "squid",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "4.10-1ubuntu1.2",
      "fix": "squid 4.10-1ubuntu1.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-squid-4.10-1ubuntu1.2",
      "released": "2020-08-24T11:15:00Z"
    },
    {
      "platform": "linux",
      "product": "squid",
      "release": "ol 8",
      "fixedVersion": "7:4.4-8.module\u002Bel8.2.0\u002B7778\u002Baff7482f.2",
      "fix": "ELSA-2020-3623",
      "url": "https://patchblox.com/security/fix/linux/elsa-2020-3623",
      "released": "2020-09-04T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "squid-cgi",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "3.5.27-1ubuntu1.9",
      "fix": "squid-cgi 3.5.27-1ubuntu1.9",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-squid-cgi-3.5.27-1ubuntu1.9",
      "released": "2020-08-24T11:15:00Z"
    },
    {
      "platform": "linux",
      "product": "squid-cgi",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "4.10-1ubuntu1.2",
      "fix": "squid-cgi 4.10-1ubuntu1.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-squid-cgi-4.10-1ubuntu1.2",
      "released": "2020-08-24T11:15:00Z"
    },
    {
      "platform": "linux",
      "product": "squid-common",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "3.5.27-1ubuntu1.9",
      "fix": "squid-common 3.5.27-1ubuntu1.9",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-squid-common-3.5.27-1ubuntu1.9",
      "released": "2020-08-24T11:15:00Z"
    },
    {
      "platform": "linux",
      "product": "squid-common",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "4.10-1ubuntu1.2",
      "fix": "squid-common 4.10-1ubuntu1.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-squid-common-4.10-1ubuntu1.2",
      "released": "2020-08-24T11:15:00Z"
    },
    {
      "platform": "linux",
      "product": "squid-purge",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "3.5.27-1ubuntu1.9",
      "fix": "squid-purge 3.5.27-1ubuntu1.9",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-squid-purge-3.5.27-1ubuntu1.9",
      "released": "2020-08-24T11:15:00Z"
    },
    {
      "platform": "linux",
      "product": "squid-purge",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "4.10-1ubuntu1.2",
      "fix": "squid-purge 4.10-1ubuntu1.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-squid-purge-4.10-1ubuntu1.2",
      "released": "2020-08-24T11:15:00Z"
    },
    {
      "platform": "linux",
      "product": "squid3",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "3.5.27-1ubuntu1.9",
      "fix": "squid3 3.5.27-1ubuntu1.9",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-squid3-3.5.27-1ubuntu1.9",
      "released": "2020-08-24T11:15:00Z"
    },
    {
      "platform": "linux",
      "product": "squidclient",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "3.5.27-1ubuntu1.9",
      "fix": "squidclient 3.5.27-1ubuntu1.9",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-squidclient-3.5.27-1ubuntu1.9",
      "released": "2020-08-24T11:15:00Z"
    },
    {
      "platform": "linux",
      "product": "squidclient",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "4.10-1ubuntu1.2",
      "fix": "squidclient 4.10-1ubuntu1.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-squidclient-4.10-1ubuntu1.2",
      "released": "2020-08-24T11:15:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}