{
  "cveId": "CVE-2022-23959",
  "url": "https://patchblox.com/security/cve/CVE-2022-23959",
  "summary": "CVE-2022-23959 is fixed in 6 products on 1 platform, first by libvarnishapi1 5.2.1-1ubuntu0.1, released January 25, 2022. 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\nSecurity Fix(es):\n\n* varnish: HTTP/1 request smuggling vulnerability (CVE-2022-23959)\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": "2022-01-25T17:15:00Z",
  "severity": "Important",
  "cvss": 9.1,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
  "epss": 0.02011,
  "epssPercentile": 0.80994,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libvarnishapi1",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "5.2.1-1ubuntu0.1",
      "fix": "libvarnishapi1 5.2.1-1ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libvarnishapi1-5.2.1-1ubuntu0.1",
      "released": "2022-01-25T17:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libvarnishapi2",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "6.2.1-2ubuntu0.1",
      "fix": "libvarnishapi2 6.2.1-2ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libvarnishapi2-6.2.1-2ubuntu0.1",
      "released": "2022-01-25T17:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libvarnishapi2",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "6.6.1-1ubuntu0.2",
      "fix": "libvarnishapi2 6.6.1-1ubuntu0.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libvarnishapi2-6.6.1-1ubuntu0.2",
      "released": "2022-01-25T17:15:00Z"
    },
    {
      "platform": "linux",
      "product": "varnish",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "7.1.0-5",
      "fix": "DEBIAN-CVE-2022-23959",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-23959",
      "released": "2022-01-26T01:15:07Z"
    },
    {
      "platform": "linux",
      "product": "varnish",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "7.1.0-5",
      "fix": "DEBIAN-CVE-2022-23959",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-23959",
      "released": "2022-01-26T01:15:07Z"
    },
    {
      "platform": "linux",
      "product": "varnish",
      "release": "RHEL 8",
      "fixedVersion": "0:6.0.8-1.module\u002Bel8.5.0\u002B14089\u002B03a0c2cc.1",
      "fix": "RHSA-2022:0418",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2022-0418",
      "released": "2022-02-03T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "varnish",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "5.2.1-1ubuntu0.1",
      "fix": "varnish 5.2.1-1ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-varnish-5.2.1-1ubuntu0.1",
      "released": "2022-01-25T17:15:00Z"
    },
    {
      "platform": "linux",
      "product": "varnish",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "6.2.1-2ubuntu0.1",
      "fix": "varnish 6.2.1-2ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-varnish-6.2.1-2ubuntu0.1",
      "released": "2022-01-25T17:15:00Z"
    },
    {
      "platform": "linux",
      "product": "varnish",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "6.6.1-1ubuntu0.2",
      "fix": "varnish 6.6.1-1ubuntu0.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-varnish-6.6.1-1ubuntu0.2",
      "released": "2022-01-25T17:15:00Z"
    },
    {
      "platform": "linux",
      "product": "varnish",
      "release": "almalinux 8",
      "fixedVersion": "6.0.8-1.module_el8.5.0\u002B2620\u002B03a0c2cc.1",
      "fix": "ALSA-2022:0418",
      "url": "https://patchblox.com/security/fix/linux/alsa-2022-0418",
      "released": "2022-02-03T09:29:24Z"
    },
    {
      "platform": "linux",
      "product": "varnish",
      "release": "ol 8",
      "fixedVersion": "0:6.0.8-1.module\u002Bel8.5.0\u002B20491\u002B1af4e193.1",
      "fix": "ELSA-2022-0418",
      "url": "https://patchblox.com/security/fix/linux/elsa-2022-0418",
      "released": "2022-02-03T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "varnish",
      "release": "rocky 8",
      "fixedVersion": "0:6.0.8-1.module\u002Bel8.5.0\u002B736\u002Bfec10e21.1",
      "fix": "RLSA-2022:0418",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2022-0418",
      "released": "2022-02-03T09:29:24Z"
    },
    {
      "platform": "linux",
      "product": "varnish-devel",
      "release": "RHEL 8",
      "fixedVersion": "0:6.0.8-1.module\u002Bel8.5.0\u002B14089\u002B03a0c2cc.1",
      "fix": "RHSA-2022:0418",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2022-0418",
      "released": "2022-02-03T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "varnish-devel",
      "release": "almalinux 8",
      "fixedVersion": "6.0.8-1.module_el8.5.0\u002B76\u002Ba10ffa55",
      "fix": "ALSA-2022:0418",
      "url": "https://patchblox.com/security/fix/linux/alsa-2022-0418",
      "released": "2022-02-03T09:29:24Z"
    },
    {
      "platform": "linux",
      "product": "varnish-devel",
      "release": "ol 8",
      "fixedVersion": "0:6.0.8-1.module\u002Bel8.5.0\u002B20491\u002B1af4e193.1",
      "fix": "ELSA-2022-0418",
      "url": "https://patchblox.com/security/fix/linux/elsa-2022-0418",
      "released": "2022-02-03T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "varnish-docs",
      "release": "RHEL 8",
      "fixedVersion": "0:6.0.8-1.module\u002Bel8.5.0\u002B14089\u002B03a0c2cc.1",
      "fix": "RHSA-2022:0418",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2022-0418",
      "released": "2022-02-03T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "varnish-docs",
      "release": "almalinux 8",
      "fixedVersion": "6.0.8-1.module_el8.5.0\u002B2620\u002B03a0c2cc.1",
      "fix": "ALSA-2022:0418",
      "url": "https://patchblox.com/security/fix/linux/alsa-2022-0418",
      "released": "2022-02-03T09:29:24Z"
    },
    {
      "platform": "linux",
      "product": "varnish-docs",
      "release": "ol 8",
      "fixedVersion": "0:6.0.8-1.module\u002Bel8.5.0\u002B20491\u002B1af4e193.1",
      "fix": "ELSA-2022-0418",
      "url": "https://patchblox.com/security/fix/linux/elsa-2022-0418",
      "released": "2022-02-03T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "varnish-modules",
      "release": "RHEL 8",
      "fixedVersion": "0:0.15.0-6.module\u002Bel8.5.0\u002B11976\u002B0b4af72d",
      "fix": "RHSA-2022:0418",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2022-0418",
      "released": "2022-02-03T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "varnish-modules",
      "release": "almalinux 8",
      "fixedVersion": "0.15.0-6.module_el8.5.0\u002B2620\u002B03a0c2cc",
      "fix": "ALSA-2022:0418",
      "url": "https://patchblox.com/security/fix/linux/alsa-2022-0418",
      "released": "2022-02-03T09:29:24Z"
    },
    {
      "platform": "linux",
      "product": "varnish-modules",
      "release": "ol 8",
      "fixedVersion": "0:0.15.0-6.module\u002Bel8.5.0\u002B20320\u002B0b4af72d",
      "fix": "ELSA-2022-0418",
      "url": "https://patchblox.com/security/fix/linux/elsa-2022-0418",
      "released": "2022-02-03T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "varnish-modules",
      "release": "rocky 8",
      "fixedVersion": "0:0.15.0-6.module\u002Bel8.5.0\u002B677\u002B2a78a869",
      "fix": "RLSA-2022:0418",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2022-0418",
      "released": "2022-02-03T09:29:24Z"
    }
  ],
  "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"
  }
}